Clothespins on Hangers to practice alphabetical order (leave out some letters? write words on clothes pins? Lots could be done with this idea. Order clothespin numbers on a separate hanger that looks like a number line.
Telling Time Bingo Game (to the hour and half hour). This game would be a fun and easy way to work on telling time. Telling time is a large math concept that comes in first grade and this activity would help make it more enjoyable for the first graders.