Does your resale or consignment or thrift shop carry a good number of small wall decor items?
This “garden arbor” style of entry, set flush against the store’s entry, could be a great way to not only give you a bit more hanging display space, but also serves to set the mood for the rest of your shop.
Getting customers involved from their first step in will increase interest in all your merchandise.
The simple act of them stopping to look at something here, “invests” them in your shop…they are now involved, and will perceive your shop as much more interesting and worthy of a careful browse. As a unique feature, this treatment also makes even the blandest of retail space stick in the minds of customers…which, of course, adds to your word-of-mouth!
Don’t carry such items? Or concerned about merchandise going missing? Imagine a similar structure entwined with white lights, spring flower garlands, silk autumn leaves. An easy and inexpensive way to create a seasonal mood without trimming the entire store.
Make your customers feel special when you make a Big Deal of simply setting foot in your shop!
(Hint to my NFP thrift shop friends: this could be the place for some graphics about the good your charity does, making the subtle statement that your purchases here at ThriftShop help support our free dental clinic or Shopping here helps keep HomeTown food pantry stocked.)
Auntie Kate The Resale Expert 
You can do something like this outside possibly too. In our town, there are codes that pertain to advertising and signs but nobody seemed to mind when we added a couple of black metal trellis pieces to a blank wall on the side of our windows. They aren’t signs and don’t say anything, the just look very cute and get lots of interest from the road – salvaged finds, of course!