For the frickin' almighty love of all things holy, JUST DON'T USE THEM IN THE FIRST PLACE!
Now what, Rhonda? I'll tell you what. A cute little article floats by my gmail with the adorable headline, "10 Ways To Upcycle..." Upcycle what? Darn you, gmail, for truncating my subject there! You and LinkedIn have it out for me, don't you? Making me click on you and all... you just love that, don't you? I'm all for a great upcycle, so I'll play your clicky game. You got me again, LinkedIn.
"10 Ways to Upcycle Used K-cups."
Oh, thank you, I was wondering what to do with all those used plastic cups!
Even if anyone was sociopathic enough to re-use these in every single way described, it would not be enough to keep up with how many are used! Offices that use these... even households... I can't imagine how many are used in an average office on an average day, but even in households, it could be as many as a dozen a week, conservatively thinking. Times 52 weeks? Adding in for parties and company?
Under "seed starter," it is suggested that you fill it with organic soil and one seed. That suggests that somewhere out there, there are eco-minded people who care about organic stuff that use these things regularly. I must live in an alternate reality or something. These things just don't add up in my head. I find no logic here.
Just. Don't. Use them. Ever. Make your own stupid coffee. Because if you have time to do all the upcycle things suggested here, I'm pretty sure you can find time to use a regular coffee maker, or a nice French press.