This printable stylus clicks right in to place inside the Nintendo 3DS XL portable gaming console. It works great in PLA with a great fit.
Further ideas for improvement: The tip could be hollowed out so a teflon end could be inserted, like the original nintendo stylus. Wacom Stylus nibs should work well for this. Also you could add designs to the end of the stylus, like a pokemon head or something. I wonder if this would be a good print for flexible PLA?
I printed mine using regular clear PLA on a Makerbot Replicator 2, with 0.1mm layer height and makerware supports & raft enabled. I sanded the tip a little to smooth the end to remove the tiny ridges and give it a perfectly smooth end.