I think you could also have multiple pipe cleaners coming from one number and students have to show multiple ways to add numbers to get to that number. Counting with pipe cleaners and beads. Great for fine motor development too.
Alphabet Sounds Fishing and Matching game. Use ping-pong balls to practise letter names and sounds with a fun fishing and matching game for pre-schoolers!
Posting 'swords' & beating the timer - from Rachel (",) I like the idea of using an hourglass and making this a bit more competitive