Triple Shells (you can't interact, but they do revolve around a central spot)
Yoshi Egg (inetracting gets you a weird jumping noise and a Yoshi voice saying "
Yoshi!" The egg itself jumps around too)
Yoshi Egg in action
Kart (sadly does nothing, though it does look cool)
Lil Bro's Hat, Big Bro's Mustache, Lil Bro's Shirt
Wario Hat, Bad Bro Stache, generic design
Toad Hat (and a little pro design I made ^_^)
Toad Shirt (though the colors are reversed..)
Peach's Parasol (works like any other umbrella item)
Toad Parasol (see above)
SMB3 Paper (I know Nook would have displayed it better, but he wasn't open at the time..)
Now for a couple of fun shots. :D
Dr. Mario! (Big Bro Mustache, Dr's Coat)
Wario Ware Wario (sorta.. Pilot's Cap, Bad Bro Stache, Pleather Vest)
EDIT: I fixed the second Yoshi Egg pic. I accidentaly posted the first pic twice.