Hi - first poster here!
I have a few extras to add:
Supplementary items (if you make/sell them) such as gift tags or cards
Spare Gift boxes
Leaflets with details of future fairs you’ll be exhibiting at
Order form for bespoke items
Safety pins, Sellotape, Blue tak & scissors - they’re just handy to have around
Calculator - for totting up all those sales
baby wipes and tissues - very handy, you might need to clean the table when you get there and grubby hands are not conducive to sales.
bottle of water/flask of coffee and a cereal bar/lunch - basically something to eat and drink in case you can’t get away from your table
Plus an outfit you feel fabulous in and a broad smile!