After the detector, consider a pinpointer to find targets fast and dig smaller holes, and a digging tool suited to the ground (the FMDAC code of ethics says shovels aren't for grass). Beach hunters need a sand scoop. Comparing Garrett and Minelab pinpointers? See Pro-Pointer AT vs Pro-Find 35. For headphones, match the plug or wireless system to your detector. Pouches, coil covers and coin flips are in accessories.
Gear guides

Pro-Pointer AT, Pro-Find 35/40 and AccuPOINT compared by waterproofing, sensitivity and features.

Hand diggers and long shovels compared by listing, plus the refill-your-hole rules.

Stainless sand scoops compared by size, holes, handles and weight, plus Garrett's beach tips.

Headphones, pouches, coil covers, bags and coin flips compared by listing.

Garrett and Minelab mid-range pinpointers, side by side from official specs.

Wired and wireless detector headphones, and which ones fit which detectors.