Empty spice container, thyme I believe. Free and doesn't take up much space.
That's pretty much what I do. I have a specially marked large prescription bottle, and when (if ever) it gets full I can dump it into into my (diabetic) son's sharps bucket.I use a prescription pill bottle as well. but when it's full, I dump the contents into the sharps disposal container at our local police station.
......... I'll probably scotch tape a razor blade to the outside before I toss it in the can recycling bin.
Good idea. I'm clumsy enough to cut myself taping a razor blade to a tin.Even passing glue tape on the outside it remains dangerous because the blades are very sharp and it is preferable to print on a sheet of paper the image of a blade and then glue it to the container with transparent glue tape which also draws attention for what's inside of the container and without the danger of someone cutting himself