One of my favourite blog posts of Bill B's from 2009:
Ebay can certainly make work for idle hands and fat credit cards too - having gone from having a box of battered childhood toys from the sixties, I'm in the fortunate position of having enough Spacex toys to be able to happily pull them apart and remake them to my own design.
Needle Probes, Explorer MEV2 and Crickets seem to appear in abundance on ebay, either battered and broken and only useful for bits, or minty on a card. I found myself a couple of summers ago with a few spares, a bottle of superglue and an overactive imagination.
Consequently, I ended up with the attached models. The large Spacex Major oe with the balloon tyres came about in response to seeing the fuel carrying balloon tyre trailers in the Marx Moon Base sets.
Its basically a set of Capsela Monster Truck wheels, a bit of Robotix construction set, a spinning top and a few bits of a Micromachines oil rig.
Hardest bit is matching the colours in paint! I find now that car paint works a treat if you can get just the right shade - trouble is you don't see many lime green cars these days!