My grandkids got some Hermit Crabs and put them in a large aquarium with multiple size plastic shells. Fascinating!
Then, after they got tired of taking care of them, they gave them to the kindergarteners, who remain fascinated. :D
I forgot to tell you, my husband was a classical keyboard musician for church almost all his life. That was one of the jokes he told me back when we were dating. The other was, “Bach’s Organ Works....and his isn’t the only one.”
He was religious, but not celibate. Heh-heh.