Terrarium Who can be invited

Who can be
invited?
Life in a classroom
terrarium

Lift up a rock carefully

You will see several creatures
beneath.

What is acceptable to include
in a classroom terrarium?

How about this?

NO!!!!

How about this?

Roly Poly = Okay to invite!

How about this?

Nope, they can crawl out.

How about this?

Ha ha, just kidding.

How about this?

Earthworms = fine

How about this?

Silk worms = A OK