Imagine the possibilities
Drop a dagger and dip your sword into it to obtain d4 piercing
Drop one of those brains in a jar, d4 psionic
Kill something, dip. d4 necrotic
Dip in some dice to reroll 1s
While standing on grass to obtain d4 nature
While on an incline to obtain d4 fall damage
Haha, the last one got me.
