From the archives..

This is what I think about... and what I do.. my infrastructure is a little different.. a frames for legs and plywood for my tops.. no awning... nice table covers though... dress the front and keep the packing underneath so I can break it all down and go fast.... these photos arent of my stuff... but you get the idea

You need...

A couple of these to start...

 After you get one of these.. which I love... Mine is a little different.... raised panels and hard top but the principal is the same... I even have sides that lock...

What you sell is pretty flexable....  where you sell...  you can load up with whatever from fruit to baked goods to tarot cards to crystal balls to T shirts to comics or wheel thrown ceramics.... depending on how you detail the cart and stalls..

Sunglasses.. sun block.. beach stuff.. cold drinks, bottled water its kind of open to whatever you want to do...

Potted herbs.. spices..honey things you know people at a rennfair didn't bring..totally aside from what your selling to the touristas..