small wheels, old kids bike/small pram ?????????

hi all,

i am after some small wheels, the sort off a kiddy bike or an old pram.

Why i hear you ask (don't I?) well i have an idea, or rather i am pinching an old idea,

i intend to get my ever so sweet and manic escaping dwarf billy goat 'Bill' to earn his keep, i saw a picture of a goat pulling a small cart & i thought....Hummm

anyone who has ever tried to stop a goat when it wants to pull you knows just how strong they really are, & since i can't use a wheelbarrow right now i thought of getting Bill to pull a little 4 wheel cart about to poo pick etc

so here we go, i can make Bill a mini harness,& he loves going for walks anyway in his mini foal slip headcollar and so all i am a needing of is some wheels!

*pref 4 or at least 2 matching pairs size wize, i want to make a 4 wheel jobby so all Bill will do is pull & not have to balance it too, or i will use the base from a pram, afterall it is not to take any heavy weight....Bill is not THAT strong!

thanks bye