When you need me, you throw me away When you're done with me, I come back to you

I can close things away or open them up. I can show you right from wrong or crack the code. Whether to your heart or home, almost everyone has me. What am I?

It has keys, but no locks. It has space, but no room. You can enter, but can’t go inside. What is it?

Forgotten I linger here under your bed. Once crisp and clean, now foul instead. I travel in pairs, yet often alone. A pungent reminder of the fact that you're gross. What am I?

When you have me, you don’t use me, when you use me, you don’t know that you use me and if you buy me, it’s probably for someone else