This is a model of the One-Up-Mushroom, which appears in almost every Super Mario game. You can either print the whole thing or the single pieces (if you want to print it in different colors). When you print the whole mushroom in white, you can also make it look more lively if you paint it with e.g. nail polish.
I'm a student who found his fascination for 3D Printing when our school got a 3D Printer. Furthermore I'm interested in modeling things with a CAD software. Have fun while browsing through my things!
If you have special wishes for things I could design, please let me know! :D