Paint Zoom HVLP Sprayer Air Blower Leafield D7 Raft Valve Adapter
I bought this blower thinking it was for inflating things but it was for painting. I made an adapter anyway and it works great! This one is for the D7 raft valve but I included 2 other versions to open up in tinkercad and customize for your needs.
I also added a ring that you can put over the notches to strengthen it if you need it stronger, you could probably print them assembled and they would stick together. I printed mine separately and slid it on for a tight friction fit.