I’ve been keeping an eye out for something along the lines of a 10-20 gallon sized aluminum container to try it. You can pick up those bridgelux eb strips for something like $7 a piece for 560mm and $4 for 230mm, and I figure if I can find aluminum I’ll mount the strips directly to it.
I think the key to being successful is getting it light tight and having the ability to run a photo. Just to have the ability to aggressively train it without flowering.