Zap game I learned in grad school. Put high frequency words on sticks (these are foam sticks) and write zap it on a few sticks. The kids pull sticks from a container and read the words. If someone gets Zap It, all of the sticks go back in the bin.
Structured alphabet sensory table task: magnetic letters hidden in coloured rice with scoops and shovels. Matching letters are stuck onto baking trays (attached to the wall with velcro). Hunt for the letters & stick them onto the corresponding letters.
Kindergarten Sensory Beginning Letter Idea: I like this! Give children a variety of objects and they have to place them with the right letter. You could maybe start off with only one letter and work your way up!