I just had a yard sale this past weekend and tried several new things that I thought may be helpful to others looking for yard sale ideas.
I recently saw a package of dye-cut type stars in florescent colors for $4-5. Instead of paying that price, I used florescent paper and used a star shaped stencil in various sizes and cut out my own. These worked great for pricing large items and I even stapled them onto hanging clothes so the price was easy to locate. I also wrote the size on the star to slow down people taking the clothes off of the hangers.
My husband made me some a-frame sign stands that stood about a foot high. They were perfect to set up with signs on both sides and did not impair the traffic. The only thing I would recommend is the one you place at the end of your driveway, make sure you place it several feet from the edge and/or make it taller than one foot high because ours got ran over quite a few times.
I had several electrical items for sale that I put up on a top shelf of a shelving unit I was not selling. I posted signs that they ask for assistance with items on top shelf and I kept an extension cord nearby to plug in the items to show customers that they still worked.
I could not afford to buy batteries for every toy and item that had dead batteries, so I bought batteries and kept a screwdriver on hand for safety screws on toys, etc. and I could put the batteries in long enough to show them they worked, but I was not giving away the batteries. ha ha
I also bought those tags with strings attached and used those on delicate items that I did not want to place a sticker on or used them for items that a sticker would not stick well on.