@Darrenpauli Ooooh good question! Mine would be:
A subscription to a good password manager (ideally one that also allows shared 2FA keys in the vault like 1Password) - top by quite some way.
Other than that:
Eset antivirus license keys / hardware FIDO-compatible 2FA keys (e.g. Yubikey) with NFC for anyone who accesses customer data regularly across multiple devices / Good quality laptop backpack for anyone taking devices outside of the office / Kensington-compatible locks for laptops/POS systems in a customer-facing environment