穴（あな、ケツ）

Meaning: hole, opening

Components: 宀 (no meaning), 八 (eight) or katakana ハ

My hack: What sound would come out of your mouth if you fell in a hole? “Uwha?!” (ウハ?!)

寸（すん）

Meaning: measurement (roughly 1 inch). Heisig calls this “glued to.”

My hack: I like to think of this as “inch.” Just think of a t-square (rotate this image in your head!), and the little dot is about an inch long.

If you want to go with the Heisig meaning (“glue” or “glued to”), then try this:

The first 2 strokes are the hot glue gun, and the little dot is the dab of glue.

干（ほ·す、ひ·る、カン）

Meaning: to dry (something)

Components: 二 (two), 丨(walking stick)

My hack: If you want to dry something, just stretch it over 2 sticks (and let it air dry).