I get a lot of mine at local hobby shops, toys r us for some star wars ones but ebay is a good bet for some of the hard to get ones. Pretty good deals as well. But hit up a local hobby shop if you have any around you first and if they don't have them ask. They will know where to find them.
[ QUOTE ] seriously after watching this thread i went to the hobby shop and bought myself a 1:35 scale tamiya Panzerkampfwagen II gogo irl modeling [/ QUOTE ] haha, awesome! Have fun with it @kat: I don't know the name in english, but the glue I used melted the plastic parts together.