So, you’ve finished your painting project, but there’s still paint left over. Tossing it out feels wasteful, but storing it improperly can lead to a dried-out, unusable mess—or even a safety hazard.

When it comes to opening up cans of paint, there are plenty of ways to get the job done. Here are a few tools and methods that will help you detach (and then reattach) the lids on your paint cans ...