It rises up from the depths with razor blades for tentacles... to.... dispense... your... tape!!!!!!

Updated
WeeksB_TentacleTapeHolderV2.stl is a cleaned up version of the original - This one should have a flat bottom

The tentacle is modeled for one x-acto blade to just fit perfectly. Be green and used one of your old dull blades even.

Don't like risking your fingers every time you want a piece of tape? Print out the TapeBlade.STL for a sweet serrated alternative.

Can take a tape roll with 1in diameter center hole

The printable .x3g file is:
Left extruder 205?
0.3mm layer height
3 shells
10% infill
And took ~2.25 hours