Prookles

Prū - kull
Singular (basically impossible) Prookle
Wordplay combination of prongs + nookles (noodle tentacles)

Similar to spikes but harmless

Often made of soft plastic or silicone/rubber

Seen on some head massagers and those fuzzy balls you get at arcades.

A dog's caption to head massagers:

"Wtf??? So many prookles"