The great part about these lids is that you spin them open, instead of having to pry open your bucket lid every time you use the contents. My kids can open these gamma lids easily. Unfortunately, even my three-year old can open them easily, which leads to many "cooking" messes at our house.
I have a gamma lid of every color and a color-coding system to indicate their contents. I keep four buckets with gamma lids on the floor of my pantry. White contains rice; blue is bread flour; black holds my sugar; and red contains wheat. When my pantry buckets are running low, I transfer the food stored in my longer-term storage buckets into my pantry-buckets that have the gamma lids (you can also remove the gamma lid and place it on the new bucket).
I also keep two buckets with gamma lids in my longer-term home storage. The bucket with the orange lid is full of two-pound packages of brown sugar (which keeps them more fresh than if I just left stored them out on the shelf). The bucket with the yellow lid is full of smaller packages of powdered sugar.
These are just the ways that I personally utilize these great lids. Some families replace all of their longer-term storage bucket lids with gamma lids (which would be too expensive for me). I'm planning to store my charcoal in plastic buckets with gamma lids. Gamma lids would also be great for storing pet food, fertilizer, or anything else that you want to keep dry and easily accessible.
Gamma lids are not necessary for a three-month supply or even a longer-term supply. But if you utilize buckets for either, they can be a great tool!
How do you use gamma lids?