Portable watering station suggestions?

I've been taking my plants to the kitchen to water/drain 1-2 pots at a time but....I may or may not have purchased 10 more plants yesterday and that's a lot of back and forth. They're mostly in my foyer which is a half level down.

I've been thinking about getting something I can keep in the garage (next to the foyer) and quickly set up/disassemble like this:

Anyone have any other suggestions or ideas?