Deflated inflatable dodecapede
From A KoL Wiki

deflated inflatable dodecapede
This is a pool-toy made of two pieces of vinyl connected by a razor-sharp seam down each side. It's perfect for fun in the pool, if you don't mind going to the emergency room every now and again.
Type: familiar
Cannot be discarded
Notes
- Becomes an Inflatable Dodecapede.
- June 2005's special of the month, available at Mr. Store.
When Used
You put the deflated inflatable dodecapede in your Familiar-Groâ„¢ Terrarium.
It inflates to the proper size and floats around the terrarium suspiciously, making sure no one's shooting low-res pixellated arrows at it.