Oh, I can suggest some things. What are you looking for specifically? Tokens? Tiles?
If you head to Michael's (or whatever arts/srafts store you have) you'll find ailes full of small wood shapes, small plastic shapes, beads, little animals, foam bits, chips, disks, wheels, boxes, paper crafting widgets of every description.
If you head to Home Despot (or whatever DYI store you have) there are tile separators, plastic washers and o rings, wire nuts, bolt head covers, nuts, and sheet goods of every description.
The dollar probably has those glass flat-marbles in a variety of colors, along with who knows what else. I frequently check the craft and toy sections hoping for a serendipitous pack of something. Superglue, paint brushes, and some other oddments can be found here cheap, too.
Clear contact paper helps your home-printed boards, cards, and tiles look sharp and stand up to play.