I don't & won't use this type of housing, but I have to say, that cup-holder looks like a great idea to me. Of course you'll have to keep buying deli cups, but
for the busy person, it looks like a winner.

Reminds me of some hides I used to have & use, where the water bowl sat on the hide, weighing it down & keeping the water up & out of the way. (still sold
https://beanfarm.com/collections/bed...hide-out-large)