You have been given some great advice. So here's mine:
coasters
fabric postcards
tissue covers (for tissue packets in purses)
Other than that, I think you have a great assortment of items.
I wouldn't waste my time making casserole carriers. My friend made one, thinking she would sell them at her booth and said too much work! She couldn't sell them for what she would have to charge.
I like the idea of selling water bottles. And I like the bowl of candy. Just a little hard candy will bring people over. If you have an assortment, they will have to stand there to decide what kind to take. While there, you strike up a conversation and, before you know it...$$$ by golly! A sale!