Just in case I shuffle off my mortal coil before these all make it to completion, I'm publishing this list in the hope that someone will carry on this great work.
NO, NOT NOW! WAIT 'TILL I'VE SHUFFLE OFF MY MORTAL COIL!
Right, here we go:
Car with motor
Train and train track
Cast an army
RFID or proximity wallet security device
Soft box carbon frame
The pound note pad
Plinths for models
Wind powered stone polisher
Plunger & detonator for crackers
Pre-amp for mic
Wind up aeroplane
PC case mod
Engine for stick boat
That's not totally it, but I think it's a good start.
Now maybe if I shuffle a little over here. WHOAAAAAAH!