I’ve used it to seal popcorn and nuts. It works very well.
I also buy the larger quantities of spices and do that to them and store them in the freezer.
I’ll bet that would work well for coffee, too.
For most of my spices that I use regularly, I have an herb garden. Sage, thyme, oregano, and chives are all perennials. Rosemary is cold sensitive. Paresly is a biennial but reseeds itself freely.
I've owned Foodsaver brand sealers and have switched to a MUCH better unit. It's called The Nesco VS-02
It is about 60 bucks and is a better unit than the Foodsavers for a number of reasons. I'll never go back to Foodsaver. Overpriced.