I tried several of the A1/Mini toolkit holders that are out there, but decided I wanted one that didnt require any additional hardware (screws/bolts) and was able to close securely covering the insert.
So I started with the parametric SnapLock box, did some minor modifications to it and BOOM. We have a box that you can drop the Bambu supplied toolkit into (I recommend adding a little glue to hold it in place) and not have to keep using the cardboard box it came in.
Simply print the 4 pieces (lid, base & 2 latches), no supports needed 0.20mm layer height works great. Assemble and glue the tool tray that came with the printer into the box and your done.
Enjoy
The author remixed this model.

Using the SnapLock storage bin, I tweaked a few things and created one for a specific purpose, to hold the A1 or A1 Mini toolkit