There are almost as many labeling options as there are plastic containers. If you want flexibility, stick to erasable options such as removable chalkboard or whiteboard labels, and use either chalk paint or dry-erase markers. Label bin clips work well on the handles of open bins, and can also be used with dry erase markers or Sharpies. Some people opt to simply write directly on clear bins, or buy pre-printed stickers. If you want your label to be permanent, use a marker like a Sharpie or an acrylic paint pen.