https://www.walmart.com/ip/Ball-Aluminum-Cup-Disposable-Recyclable-Cold-Drink-Cups-20-oz-Cups-Silver-10-Count/750721666? Have those available at your meetings, or better yet, hold them accountable and don't provide a cup for EVERY TIME she forgets one. It is her parents responsibility to ensure she is prepared and our job to help remind them.
Who said anything about a stanley? https://www.walmart.com/ip/Ball-Aluminum-Cup-Disposable-Recyclable-Cold-Drink-Cups-20-oz-Cups-Silver-10-Count/750721666?
But you don't need to kill the earth at all - that's kind of the point. If this is a problem for your troop have cups on hand: https://www.walmart.com/ip/Ball-Aluminum-Cup-Disposable-Recyclable-Cold-Drink-Cups-20-oz-Cups-Silver-10-Count/750721666? It is part of the girl scout law to use resources wisely - if you can't do that but totally eliminating the use of disposable plastics, with proper planning, you are not a girl scout and not following the creed the organization is built on. THIS ISN'T HARD TO DO
