If you're studying worms, you should try worm painting! A fun art sensory project using cooked spaghetti - or use string as a non-food alternative.
Numbered Legless Spiders Adding legs to match the numbers. A couple of bright children had the opportunity to talk about how many legs the spider would need to make it up to
Water balloon painting Top 31 Amazing DIY Paintings For Your Blank Walls
"The very hungry caterpillar" preschool learning (Rachel).
Glass nugget bees - originally made for counting.would be great in sensory bin, light table, etc!
The Very Busy Spider Kindergarten Art Response (Eric Carle RoundUP at RainbowsWithinReach) Instead of scratch paper use pva glue and coloured sand to give it a raised texture