pen spinning

n.

A recreational activity of using one's fingers to manipulate a pen in aesthetically pleasing ways.

This is done through the combination of various tricks.

sport stacking

n.

Formerly known as cup stacking.

An individual and team activity / game played using plastic cups.

Participants of sport stacking stack and unstack cups in pre-determined sequences, competing against the clock or another player. Sequences are usually pyramids of three, six or ten upside-down cups.