My wife saw something similar to this on amazon and asked if I could design one. This is the mark 2, might update with any design changes.

Right now it is designed for the detergent we use, not sure if it will work other brands. It should if you just change the scaling.

The cross bar just goes from the front to the back to prevent sliding apart under the weight of the detergent. So far it has been working under the weight of a full bottle.

Creality

Ender-3 S1 Pro

No

Yes

.2

30%

Printed at the front at an angle to minimize supports.