Sticky notes are so useful that the little anachronistic squares of paper are likely plastered all around your retina-display laptop right now, or maybe even against that mirror in your house that can ...

Your standard Post-it note is a one-sided, single-use affair. You’re free to flip it over and write on the back, of course, but then you can’t actually stick it anywhere. The folks at EcoStatic Inc.

For quick reminders and can’t-miss memos, sticky notes are effective tools, and I’d argue that the simplicity of the sticky note is its best attribute. But the ease behind propping up sticky notes ...