This razor-sharp Henckels knife block set has every knife you need to chop, slice, peel, and more. Shop it now for 57% off at Amazon.

Instead, you can just sharpen them. We found a pocket knife sharpener on sale that one reviewer says changed their blades from “butter knife dull” to “razor sharp” after one use ...

Make enough attempts to cut foam using whatever you’ve got — utility knife, hacksaw, serrated plastic knife — and you’ll wish hard for something that cuts cleaner, faster, and better.