this is a customizable version of a paint roller.

Based on the great idea I saw here:
http://www.instructables.com/id/Paint-roll-hack-Text-and-massage-customised-3D
and here;
http://www.thingiverse.com/thing:47372

PLEASE USE RESPONSIBLY ;-)

MEASURE YOUR ROLLER SPINDLE AND MAKE SURE THE HOLE SIZE IS CORRECT.
ALSO you might want to just print the 1st few layers and stop the print to double check that the hole size is right.

don't make the text too long.