Bass fishing gift HELP!

Hi, my husband is obsessed with bass fishing here in MI and I swear he has all the gadgets. What is something fun and outside the box, but useful that I can gift him? His bday and Christmas are right by each other and I’ve ran out of ideas.

Notes: - has tons of lures already - has a good finder - fishes on a motorized kayak - has a tackle back pack - too many rods already IMO - willing to spend up to $300 - catch and release fishing