I do try to keep the wrapping simple but pretty, I use this lovely glitter lime green tissue paper. So I wrap first in the tissue then I use one of my personalised Moo stickers to stick it down.
Then I use the curling ribbon, I got them from a florists section at a garden centre at a very reasonable price and they will last for a long time. I could leave it at that but I do like to add a pretty tag. I bought some Gorjuss tags a few years ago while I was still papercrafting and I use those and some Handmade with love tags I found at a craft fayre. Its not a lot and doesn't take long but I think it does look pretty.
At craft fairs I just normally wrap in tissue and add the sticker but as now my daughter comes to help me I may train her up and have her wrapping the customers purchases with me. Now I'm going to find some new pretty tissue as I'm down to the last few sheets of the glitter tissue paper. I'm hoping to find something really pretty.