I have basically a big mason jar with a wire filter that is sort of a cone that fits inside. I grind 100g of beans in a blender and pour it into the jar then add water. I then put the filter in and the cap, which has a handle and pouring spout. That is backward from the intended use. The grounds are supposed to be in the filter, but I find that a bunch of the grounds end up floating above the water when I use it that way.

After a few days in the fridge, I pour the coffee out into another container and reset.

The filter is the only part of the setup that is really specialized. If I wanted to use a coffee filter and a sieve I could do it all with no specialized equipment. But the filter jar was a gift, so I do it this way.