After selling out a few times, the generously sized and designed-for-a-DETOLF case Prototype Deluxe Space Bar - Custom 3 3/4" Action Figure Playset is back in stock at the Orbitdyne Etsy page.  It lights up, with glow-in-the-dark elements and it's a good fit for retro figures but also works nicely with modern ones.  Click here to buy it if it hasn't yet sold through.

It's a 3-D printed item that is several elements you align and enjoy. It's a great display piece that seems to get the job done, and that job is making sure your figures look like they're doing something other than stand around waiting for you to play with them. It's great. This image is from the Etsy page, but I've got a slightly earlier version that isn't quite as refined as this one.  (But mine has an awesome sticker, so I'm not complaining.)  The designer is a friend, but if you have the scratch I'd recommend it even if he wasn't.