Fickle by Caitlin Morris:

A lighthearted interface exploring the stereotype of women as fickle and “hard to turn on”.

A crocheted pair of breasts have push-button nipples connected to an Arduino. The user can push and play with the nipples, but they’re programmed randomly – they may or may not “turn on” the woman by lighting up a little red heart.

Crocheted to perfection, $39.99 on Etsy.