Oh, I can totally relate to your setup! My home office has turned into a nerf gun battleground too, and I wouldn't have it any other way. Your dry-fire range sounds super cool, and I bet it's a hit with the whole family.
I remember setting up something similar with my kids. We used old cardboard boxes and some targets we printed out online. It's amazing how creative you can get with just a few simple materials.
If you're still looking for more nerf gun tips and tricks, I've got a suggestion. Check out
https://nerfinfo.com/why-the-best-super-soaker-water-gun-is-a-summer-must-have. It's been my go-to for all things nerf-related, and I'm sure you'll find some great ideas there too.