Got some Detolf display cabinets from Ikea recently. They’re relatively affordable and seem sturdy enough once they’re assembled. It took my wife and me a little while to assemble the first one, but we got pretty good at it by the time we got to the third one.
The difference between men and women: my wife wondered if three was going to be too many; I knew that getting three would mean that I’d have to choose what gets put on display and what stays packed up (for now!).