Plant pots with stem support
The material water woggles are made of is sometimes used in gardening because it can help plants grow straight, but it is not too hard to hurt the plant. If you go to a gardening store, they will sell you special foam, but a water noodle is cheaper.
This person used blue and green noodles to give their plants support. Having different colors can be helpful to distinguish different plants when all your flowerpots look similar. If you are a bit creative, you can even make a rainbow in your garden.