Back in September, when my class did a unit on Bugs, we did this Bugs Sensory Table activity.
I added about 3 bags of green Easter grass to the sensory table, and hid plastic ladybugs and ants in the grass. Each child at the sensory table used a pair of tweezers and a bug box. They searched through the grass to find the bugs, picked them up with tweezers, and placed them in their bug box.
Find more Bug Activities for Pre-K on the category page.