Magical Offhand

(Edit because mobile was confusing)

I'd be interested in seeing more interesting offhand options, like wands or elemental grenades. An offhand wand could simply use the 'use left hand item' button as a spellcasting option, three spells like most good tools, with inherent magic-boosting stats that increase further dependant on materials/tiers.
Elemental grenade satchels would also be interesting, considering the effects that elemental bullets have. Lightning to stun, poison and fire for DOTs, ice to slow, etc. Alternately healing or buffing grenades like smokebombs would be fun to play with!