I’ve seen a lot of videos on Youtube showing how to make these do-it-yourself mini sound booths. What I noticed when watching a lot of these videos was that I often like the sound better without the many sound booth. People do a comparison of what their microphone sound like with and without the booth, and I usually prefer the sound without the sound booth.
If you have to record in a room that echoes a lot, one of these mini sound booths might help. But if you’re like me, and the room you’re recording doesn’t have a lot of reverb to begin with, you may be better off without one of these.