I'm learning tissue culture as a home hobby and have suffered the joys of sourcing suitable vessels. Sure, I've located the deli container, the to-go box, the condiment cup. Boy do I hate throwing them away when they invariably show contamination. The GA-7 vessels are reusable, autoclavable, and do the job better than any substitute. Visibility is way greater and the containers just look good. Your plantlets stack nicely, you can see them beautifully, and no trash need be involved.