Butterflies

If you have never watched caterpillars turn into butterflies you must do it.  Your kids will love it.
Irelyn received a butterfly kit from my parents for Christmas and a few weeks later 2 containers of caterpillars arrived in the mail. 

Here are the caterpillars after they formed chrysalids(don't ask me why it's not cocoon). See them hanging on the right side?

Ready to release

I saw a kit at Lakeshore the other day for $30 and you only received 5 caterpillars.  This kit was from Costco, bigger and cheaper, and Irelyn received 10 caterpillars.  Try Insect Lore and see if you can get a better deal.