In preparing for my quilt cruise I purchased this fan. It was wonderful -- small, rechargeable, puts out lots of air for its size and also worked great to help keep me cool while we were off the ship due to the neck strap. It will be a permanent fixture in my class/retreat sewing tools.
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
It has an option to open and use flat on the table and wear.