Buy bolts, the kind with flat tips, and nuts for under $1 and create a brilliant fine motor skill exercise for your toddler:
1. Buy two different sizes of nut & bolt sets. Your child can practice fitting them together and distinguishing between the sizes.
2. Buy one size bolt with four or five nuts. Your child can put all the nuts and then take them off.
3. Install the bolts in a board.
Montessori Curriculum for Infants and Toddler on our site.