[Kevan]

I have dozens of plastic wheels, they'll never get used as wheels so a bit of elbow grease and there's 4 less taking up space in a box.

I'm the opposite to you Ken, I'd rather save the £4 to something I didn't already have...and I love making stuff anyway, any excuse to get into my hidey-hole under the stairs and spend an hour or so working on a car or two.