You could make 2 liter pop bottles for a wick system, cut the bottle bottom off, drill two small holes in the cap, turn it upside down with the cap side as the new bottom, fill it up at least an inch or two with vermiculite for the wicking action, then put your growing medium in the bottle, and put it in a rubbermaid tub and fill up the tub with water.
The big downside is that it doesn't hold a lot of volume and tips over easily, unless you pack it snugly and carefully with other 2 liter bottles. You could do the same thing with 4 liter milk jugs.
I used such a system to grow tomatoes. It did okay, even though I neglected to fill the tub up with nutrients most of the time.