If you have kids in school, you’re probably clipping and saving General Mill’s Box Tops for Education like me.
Our school collects them once a month. I used to clip them and pile them up on the microwave until it was time to turn them in. But they were always falling behind the microwave and getting lost. Or something would get spilled on them. I didn’t want to send in sticky Box Tops. I finally tamed the Box Top mess last year. The solution was so simple, I don’t know why I didn’t think of it before.
All you need is a plastic baggie, like a Ziploc, and a magnetic clip. 
Use the clip to hang the bag on the fridge. When you clip a Box Top, just drop it in. The bag is out of the way, but easily accessible. Seeing it hanging there every day also helps me remember to turn them in once a month.