Our show "area" is still not complete and I'm still working on it when I have time. We bought a place in 1-15 and had to finish a garage and make it work for what we do.
What I've done is collected old signs, made new signs, bought beer signs and local advertising media to display. I also display most logos on a back wall of most of the well known brands we carry.
A few weeks ago I picked up a huge 1/5? scale model airplane with 8ft wingspan for $20 to hang in the corner of the ceiling. It will have our logo on it just to give customers and idea of other things decals are good for. We have a line of hunting, fishing, boating decals and display over 300 to "grab and go" quick easy money to add to the tab.
Will be happy to post some picks when I'm done as we are getting into our busy season, so it might be a while. The outside needs more work but that will happen in the spring once I figure out what I want to do.