That worked nicely. My coffee pod machine (K-fee system) was treated to a refilled pod. These pods have been redesigned inside, with a press-in disc that holds the coffee in place, the plasticised foil seals it in. Cut the top off a recently used pod, rinsed out in hot water, refilled with two teaspoons of my favourite coarse-ish grind, plastic disc replaced and the top covered in cling film.
As it was going to be used immediately, I didn't bother covering the hole in the bottom. It's really nice coffee and survived this brewing process with its smoothness and flavour quite intact.