Where can you find ice blocks in the game?

Ice blocks are found in adventures, especially those with a winter theme. When you're there, pick up every one you can, including snow piles. In fact, in every adventure, you should pick up everything outside of the common three; grass, bushes, & rocks. And don't discount rocks, if you need to make gravel. Resources will be needed sometime, if even to help neighbors to fill orders, so load up for the lean times.