I think you have to have a good variety to show, this gives you a good chance of a sale and also you can see what is selling and what is not, for example the first 2 shows I sold out of puzzles so made 29 for the last show and only sold 1 also the first 2 I sold around 50 ornaments and the last show sold 2, I was pleased I did not make more
I also like to fill my table up and not leave spaces, I think it gives it a bit of a wow factor
Jimbo