Custom piranha plant scarf by An Enemy Airship, whose work we've featured before. Though this item is not available in her Etsy shop, she has supplied the pattern if you're a knitter. Seen via Hot Blooded Gaming
Sculptor Kalapusa set about crafting a real-life, realistic Piranha Plant from Super Mario Bros., showing his work in 40 or so easy steps in this video above. The creation stands about 3 feet high and features an ultra-realistic uvula.