These 3/16" cubes are a great size. They will not pinch and are easily handled. A cube of cubes is incredibly entertaining and makes a great gift.
A bunch of these magnets left on your desk will amuse (and distract) coworkers for hours. Their productivity will drop while yours soars. You are virtually guaranteed a promotion if you buy these magnets!
This size is also available in grade N42 as part number B333-N52