Whack a mole pet

Look at your ring of floating pets. Now at the Wack A mole Machine.

See what’s missing?

Who wouldn’t want to run around with a few Whack A Mole POW’s in tow?

I was gonna suggest this as a milestone but the milestones seem picked out already; plus I’d want to own a few of them so just have them for sale at the Asteroid Belt.