A simple stand allows you to place a tray on top of the AMS dome to create more storage space.

Just put the stand on the AMS and put the tray on. No screws or glue needed. You can put some rubber tape on the rounded surface of the stand to prevent slipping and scratching if you want.

I included a suitable tray who maximises the print space of the X1/P1 series, with some cut-outs on the sides to prevent distortion when printing.
However, a better way is to utilise other trays or organisers you already have, as long as they are less than 236mm wide they will fit on top of the stand.