I am creating a board game which requires 2 colors with 5 pieces each. As of right now, I use pennies and dimes. What is an easy way to get pieces for my board game?
Gamecrafter allows you to buy all sorts of pieces for your game. If you use their pieces, you can even upload your game and have people buy it on demand.
If you want custom game pieces, you could have them 3D printed at Shapeways -- they do great work. As folks have already mentioned, game stores (I'll throw in a link to TheWarStore) often have markers and tokens of all sorts. One last option is poker chips, which are often available from the dollar store or even in grocery/convenience stores.
MeepleSource has all kinds of game accessories, including custom meeples. I would definitely check them out.
You can buy huge lots of various game pieces on e-bay.