Selling works at a market

You can easily record this as daily receipts. Then you don't have to issue an invoice for every private person. I often make sales to private persons myself and sometimes sell at Christmas markets in the winter, so daily receipts are really practical. You do have to keep track of them daily from the moment you start, but you can easily make a bulk change in Dexxter.

Indeed, working with the daily receipts book is the way to go :)