As a relative newbie on the scene, I am by no means an expert in the ways of the craft sale, but there are a few things I have learned in my short time manning my table of handmade wares. I know everyone has theirs, but I thought I would share with you my own list of “must haves” at a craft sale. Feel free to comment with your suggestions, too.
Besides your product, signage and display items (I’ll leave that to you), be sure to bring along:
Business cards. Don’t leave home without ‘em. Ever. I have yet to attend a show that didn’t result in at least one call-back from someone who grabbed my card. Don’t have cards? Shame on you! I buy mine from the copy/print centre at my local big-box office supply store. I am able to design my own on their handy-dandy kiosk (or online) and they’re ready for pick-up in 3 days. At $22 for 250, they’ve already paid for themselves.
Change. And lots of it. I keep a “float” of fives, twos, singles and quarters, which I replenish after each sale and then keep in a safe place. (It’s not under my bed, so don’t look there!) With most ATMs dispensing only 20s, you can expect to see a lot of them, especially early in the day or if you are placed close to a door.
Pens/notebook. Great for making lists, jotting down the names of customers, new product ideas, etc etc etc. If things get slow, you can play hangman with your neighbour.
Assorted fasteners. Clothes pins, safety pins, zip-strips, duct tape, push pins, twine – you never know when you are going to want to attach something (or make a quick repair) to your set-up.
An extra tablecloth. Good for “oopsies” (ask me about “nacho kid” someday), but also great to have on hand in case you are given an extra-long table or asked to “spread out” because someone didn’t show up.
The tools of your trade. Pack whatever you might need to make a quick repair on your goods. For me, that means a glue stick and scissors. For you, that could mean jewelry pliers, a needle & thread, etc. Think quick-fix. If the repair is more involved than that (ie: requiring clamps) or is going to take you away from paying customers, pack it up and take it home.
A snack. I have yet to eat a warmed-over hot dog from the concession at a craft sale. Why? Because I pack an insulated bag with veggies, yogurt, crackers and fruit, that’s why! (This little trick also prevents you from making a meal out of a loaf of banana bread or a plate of cookies from the bake table. Not that there’s anything wrong with that.) Just be conscious of your surroundings and try to pack items that can be surreptitiously eaten during lulls or between customers. And, keep in mind that the fastest way to get a customer to come along and ask you a question is to put something in your mouth.
A reusable coffee cup and/or water bottle. That should go without saying.
Something to do. Sometimes traffic just isn’t all that brisk and the hours tick-tick-tick away. In that case, it’s ok to work on your knitting or read a book, but please do it during lulls or between customers. (Personally, I won’t buy something from you if you are sitting back engrossed in a trashy novel or if I think I’m disturbing your cross-stitching…but that’s just me.) I like to bring things to cut out, stamp or assemble. It’s a craft sale, so I figure I might as well…craft!
Bags and tissue/newsprint. Most people pack reusable bags now, but it’s always good to have a supply on hand just in case (especially if you sell large or breakable items).
A container or baggie of glass/surface cleaning wipes and a couple garbage bags are always good to have, too. It never hurts to tidy!
This is a close-up of the aformentioned cabinet, which is now residing comfortably in a corner of my living room. The cabinet had pretty much been gutted and all that remained of the "guts" was the radio itself (though disconnected and probably not operable) and a piece of the glass that covered the tuner. In the interest of prettying it up, I made a tiny collage to fill the space. 
I love these new domino pendants. It took me forever to source the bails and actually get around to putting them together, but I am so glad I made the effort. 
What a crazy, crafty Sunday! After much preparation, the mascot and I spent the whole day manning the “Everything is Ticketyboo” kiosk at Ciclovia on Broadway. 
This was the scene on my kitchen table the other day. You're looking at four mirrors in varying states of completion, a few pins awaiting glazing, and a few of the bits and pieces that go into the creative process. The day before it was the sewing machine, the mini ironing board, and a basket of notions.
I couldn't bear to have an unprotected netbook any longer. R gave me "Harriet" for my birthday a couple of weeks ago, and since then she's been carted around in a backpack, a shopping bag, an old corduroy tote...nothing befitting her awesomeness. Until now. 
