Letter pops: each student gets one and they each say a word that starts with the letter on their pop! - Could also just write on popsicle sticks. Would make a good center- pick a stick, write the letter, draw or write a word that starts with that sound.
Had when i worked in a preschool and kids love them! I would use colored sand instead of white salt. DIY salt tray with alphabet cards. Easy to make and kids have fun smoothing out the salt after correctly making the letter
Or with letters/numbers - Sight Word Beach Ball: Use a Sharpie to write sight words on a beach ball. Take kiddos outside and have them throw or volley the ball around. Whoever catches the ball, must read all the sight words that their hands touch!