Back when I hand-watered in coco I used fabric pots sitting on typical plastic saucers on elevators such as these:
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^
https://www.gro-pro.net/shop/product/gro-pro-nx-level-pot-elevat . I found these for a bargain at my local hydro store. They're on Amazon too, but ridiculously overpriced.
Another alternative would be something like this:
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^ Also from local automotive store (Canadian Tire), called a "bucket insert". This is used to put in a wash bucket so you could lay your washrag/glove in it while washing a car and keep it up out of potential dirt/rocks that might fall in your bucket. This is actually what I use now instead of the pot elevators from Gro-Pro, above (mainly because the bucket inserts came in the exact size I was after). I found a cheap plastic saucer at a local hardware store that these bucket inserts fit snuggly in to.
I used a fuel siphon pump like this to collect run-off out of the saucer, which I got from a local automotive store. Something like this:
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I currently use an automatic irrigation/drain system but I don't think it would fit in a 2x2 tent. Anyway, I basically followed the DIY guide on
www.cocoforcannabis.com. You might find some inspiration there. But any way to raise a pot out of saucer - whether it be a plastic elevator, or even something you make yourself - in conjunction with some kind of siphon, such as a fuel pump, will do. Before the pump, I used a turkey baster, although that was a bit too much effort for my liking lol.