These supplies may be helpful for tournament directors at events:
Pens/markers
Mat numbers (can be laminated, or simply written on a paper with a marker)
Tape (for mat numbers, cords, and signage)
Bracelets (for admissions)
Cashbox
Petty cash
Ice packs
Microphone/PA
table-skirts
Mat cleaning solution (and spray canister)
Mop