Tanks for Goblins

Any good goblin herder knows that their vehicles can be made out of anything. I highly recommend using whatever bits, gubbins, trash, dollar store children's toys, sand, nuts, bolts, and aggregated detritus you can find to build little war machines for your horrible little green tide. However, if you don't feel like doing that then here are some tanks for goblins.   STLs are provided unsupported.