This little chameleon clips onto your monitor, laptop screen, pencil, printer, mouse cord -- or just about anywhere else (as shown here, perched atop of http://www.thingiverse.com/thing:19104).
2016/1/25 Update: A new "V3" version with stronger limbs, built-in support and repaired geometry has been added. If you had difficulty removing supports without breaking the front legs on the other version, try this one! Print with 4 shells for strength.
2016/11/22 Update: V3 has been confirmed to work exceptionally well with semi-flex filament. I used raft (probably not necessary) and printed at slow speed. A version printed at 125% size grips a pencil very well.
2016/12/9 Update: The No Support version has been confirmed to print well at 50% or 60% size with raft (I used a helper disk instead) and no support. It hangs onto a piece of 1.75 mm filament, or a twig or wire with similar diameter. This version is confirmed to print well on a Tiko printer with default settings.