I made a desiccant tray that snaps with the original desiccant cover for the Bambu Lab AMS.
I simply used PLA and .2mm standard settings for printing.
This should fit just perfect in your ams if it's the same as me. I bought it early 2024.
To install the original cover on the desiccant tray, start by joining the part closest to you by first lining up the pimples with the holes on the cover, and then snap it with the tab on the back.
The tray is placed in the AMS just like the cover alone would be placed; inserting the 2 front tabs in place, and snapping the back tab in place.
Note
The original cover holds most desiccant beads, BUT, smaller beads can get through the holes, so don't overfill and turn upside down.