11) a bicycle made for one

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!

So, unicycle, tandem or trandom perhaps.

Q12 is it a tandem?

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.

Elephants have four legs
My table has four legs
My table is called Speckles

<grins>

I am not programmed to respond to anything but questions. Gargle blargle. Fizz fizz.

13 Is its primary purpose transportation?

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.
13) Is it's primary purpose transportation? Yes.

Does it have four wheels?

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.
13) Is it's primary purpose transportation? Yes.
14) Does it have four wheels? No, it does not have exactly four wheels. (I could have been so mean!)

Is it a Reliant Robin? (3 wheels & a steering wheel)

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.
13) Is it's primary purpose transportation? Yes.
14) Does it have four wheels? No, it does not have exactly four wheels. (I could have been so mean!)
15) Is it a Reliant Robin? Nope, it is not a Reliant Robin.

Hmm.

Emphatically no battery, a transport of delight, strongly denied bicycicular properties, wheeled (adjectival rather than verbal.)

Roller skates/blades fit in a breadbox, and might not move OB very far horizontally.

Hmm.

There shall be no hints from these parts, especially now I remember what it is!

16) Does it have three wheels?

17) a wheelbarrer

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.
13) Is its primary purpose transportation? Yes.
14) Does it have four wheels? No, it does not have exactly four wheels. (I could have been so mean!)
15) Is it a Reliant Robin? Nope, it is not a Reliant Robin.
16) Does it have three wheels? No, it does not have exactly three wheels.
17) Is it a wheelbarrow? No.

<gets ready for backlash>

18) Is it a unicycle?

00) Mostly mineral.
01) Is it wooden? No, not wooden.
02) Bigger than a breadbox? It would not fit in a breadbox.
03) Mount Everest? No, no, no. Not a mountain at all, in fact!
04) A diamond as big as the Ritz? No, sorry, not a diamond as big as the Ritz (either cracker or hotel).
05) Found indoors? No, you wouldn't think of it being indoors.
06) Manufactured? Yes, definitely.
07) Does it contain a battery? No! No! Nooooooooooo!
08) Has it got moving parts? Yes
09) Would it move OB? Yes,
10) Is it an infernal contradiction engine? No, it is not an infernal contradiction engine. If it were I would have had to contradict you anyway!
11) Is it a bicycle made for one? Emphatically not!
12) Is it a tandem? No, you're treading a dodgy path.
13) Is its primary purpose transportation? Yes.
14) Does it have four wheels? No, it does not have exactly four wheels. (I could have been so mean!)
15) Is it a Reliant Robin? Nope, it is not a Reliant Robin.
16) Does it have three wheels? No, it does not have exactly three wheels.
17) Is it a wheelbarrow? No.
18) Is it a unicycle? Nope. Sigh. Waggle waggle.

not a question!

So far we have concentrated on wheeled land-based devices. anyone want to risk the last two guesses on water or skiddy (not me, silly) devices?