Check if you need a table and chairs, check if you will actually have a stall or if you will need a gazebo or something.
I take....
Table,
chair,
Boxes/ plinths for display,
table cloths and covers for plinths,
calculator,
pen and pad, red pen for reductions,
Spare lables,
Float, (in relation to prices IE if you charge 99p etc you will need pennies),
leaflets/ business cards,
Couple of perspex menu stands for adverts/ prices.
Snacks and drinks,
Stock all in boxes,
Trolley if I can't park in front of stall to unload,
Friend if possible to help with setting up and breaks for the loo.
Consider what you will put stock in, its not too bad a fetes as you can often park right behinfd the stall but I have often seen stall holders lugging loads of tatty cardboard boxes and carrier bags.
I usually set up table and cover with cloth, put boxes of stock underneath if I have to move the car. Reverse this at closing time, stock goes back under table and cloth if I am on my own and i have to go and get the car.