ALDI used to have wooden art boxes, that sound exactly like what you're after. I'm not sure if they still sell them, but they might be available again at some point.
https://www.ozcardtrader.com.au/threads/how-do-you-store-your-ultra-pro-one-touch.218109/post-1793904
If you're on Facebook, look up Robs Sportscards international service, run by Rob Greenberg. It's far better than COMC as a mailbox service, and better than mymallbox in my opinion.
Sounds like that might be more of an issue for the Celtics; when you can't score on a team whose most active defender is a slow, white (why does skin colour affect defense?) rookie, you've got some real issues.