Number Playdough Mats with Ten Frames (from A Differentiated Kindergarten) This seems like a really fun activity that could be used for math during community workers unit. If you use different community workers cars for different numbers and make each of them fun to look at and interesting to the students. Plus what kids kindergarten aged wouldn't love to work with playdough.
Suggested (on blog) to use hard hats and to store base ten blocks in dump trucks - great block center or housekeeping/dramatic play center idea! A Differentiated Kindergarten: Base 10 blocks self-checking Freebie. Recommended by Charlotte's Clips