I was able to create these small paper pots just to get my seedlings started and wait for the proper temperature outdoors.
It's very simple to water from below using these and because of the size being so close to the Solo cup size, it is very easy to keep algae from overgrowing.
Another added advantage is being able to use a variety of colors for my paper pots. This adds personality to my small office while waiting for the seedlings to grow larger.

