Some of the wood is sourced from an FSC-certified mill and other wood is reclaimed from a tree cutting service. The discs are sealed with a mix of beeswax and olive oil. Themed sets include baseball, robots, garden inhabitants, numbers, and birds. The toddler sets include 12 discs and the “big kid” editions include 20 discs. Also, check out Apple n Amos’s portable alphabet disc set, which can help kids learn letters and play around with making words.