Eventually one of two things happen... Your range bag and/or back of your vehicle get destroyed by metal ammo cans. Or, your plastic bag/cardboard box carrying your ammo self destructs into a big mess. EMDOM, with Military Morons, made a great solution.
The Ammo S.A.C. (Soft Ammo Can) does a amazing job of keeping all your ammo in one place, making it easy to access and easy to identify. The small version holds about 750 rounds of 5.56mm, while the large one holds about 1000 rounds of 5.56mm. I have both but prefer the smaller version, I find it more manageable.
One of my favorite things about it too, is that I don't have all the trash that ammo comes packaged in when I am at the range. I've been using these for about 2 years now and I imagine they will last forever. Especially since they have a lifetime warranty.
I did a video review of them here: https://kitbadger.com/emdom-ammo-s-a-c/