I use something like that, mini minit one cup filters. They have a hole
in the top and a little swizzle stick, and you put the stick across the
top of the cup and hang the bag from it. Works like a charm.

I'm only starting to discover pu'erhs. I was kind of surprised when the
stuff I got from Upton was exactly what I had already had from the
Co-op. That said, I really like it, and wish the sample had been more
than 4 cakes. I'll have to get some different samples next time I
order.