I got some 4" PVC pipe, then slipped a toilet flange on the bottom end so it would have a wide base (not tip over)
I had my daughter sew me some filter socks, I just used felt made from a sythenthetic material at JoAnn's Fabric store. I think it is polyester. And the thread was polyester too (I think cotton might rot). When I have a lot of "used" socks, I put them through the washing machine with no soap.
The homemade socks slip into the 4" PVC, I fold over the tops of the socks to prevent them from falling in.
Edit.. I forgot to say.. I drilled many 1/2" holes in the sides of the PVC pipe so the water could escape easily from the socks.