Ok, no rocks...but paper and scissors will be needed for this post.
While skimming through Slot Forum the other day I found a cool thread about paper cars as scenery. Yes, paper. I must admit to never even having considered looking for plans for paper cars on the internet but it's sure a cool way to make your own scenery. So you can't find a nice red Alfa for your scenery? How about this one?
I left the jpeg large in case anyone wants to swipe it from the site to cut up and use.
This is sure a great and cheap way to make your own scenery...but be warned some of these are not beginner projects... witness this work of art by Milos Harant!
A 1/18 scale Aston Martin DBR-9.
A stunning model. If you want to contact Milos about this here's his email: firstname.lastname@example.org
Yeah, I know technically not slot cars but I'm sure someone with enough patience you could make one in 1/32 scale and you could get the plans from Milos...not me I'm not remotely that good a model builder.
Aston's not your speed? How about a Trabant?
Or how about an entire message board of paper models?
Or a whole page of paper projects on this Japanese site...some could be converted into slot car type scenery, not the cats though!
I've used a number of designs from the Carrera4fun.de site on a bunch of different projects. I was a bit skeptical at first about the models only being made of paper but it's a great medium to work in...as long as you have a fairly dry environment, paper models don't like humidity!