What you can do is when the old coffee pods are used, don't throw them away, instead, open a tiny corner of the pod, empty out the old coffee, rinse it out, dry it out and refill them with fresh coffee, (from a can), then seal the open part with a paper clip, that should work fine but of course eventually they will have to be thrown away and a newer one refilled. If anything, this will save you SOME money.

Use booma's method, but use teabags,which are cheap, replacing the tea with coffee.