"It's-a me, Mario, and this message is okey-dokey!"
If it were later in the year, I'd wait until I found more mushrooms, and mushroom themed... everything, and then I'd set it up in a room. As of now, you might as well just do what FalxXD said. --- Changed my sig, because Mega Man in Smash Bros. is all that matters, now. Except Sonic. Not changing this part until he's announced.
If you like collecting Nintendo-themed items, keep at least one "famous mushroom" with your Nintendo items. If you eat it, it makes your character grow for a few seconds (including the "Mario get's bigger" sound effect from Super Mario Bros.). Keep one with your Nintendo items and eat another to check the effect out.
The rest do other kinds of effects, but are mostly pointless. Just sell them. --- Opie & Anthony | Ron & Fez, XM 103/Sirius 206 XBL: Maxx the Slash | PSN: Maxx_the_Slash | 3DS: 3222-5637-7984 | Wii U: Maxx_the_Slash