[whip]

I use the 2.5 gallon rectangular water jugs from the store and freeze them on their side. These just happen to fit in my Sherpa 120 like they were made to do that. Handle and spigot if you want the water. About once a year I'll have to replace one when they get a pinhole in a corner or something. They'll survive a lot of thawing and freezing though. And they are only a couple bucks if at the end of a trip you want to slice it open and let everyone go to town for some drink ice on the last night.

You might find you are about to gain cooler space too. Grocery store ice blocks are half air anyway. If you were using three before you might only need one or two. Making your own is going to be way more solid and last longer.

yep drain 20% put em in the freezer upside down with valve open so when the ice expands the air escapes. Leave 3-4 in the freezer year round. Your freezer will run less saving energy and the ice blocks get super cold and last a lot longer. Weatherstrip the lid, toss in dry ice, duct tape the seal around the lid. Open still frozen 7-14 days later.

 

[cataraftgirl]

Hospital plastic bath basins. Perfect size. Easy to freeze and un-mold the ice block.

 

[Didi77]

I use the 2.5 gallon rectangular water jugs from the store and freeze them on their side. These just happen to fit in my Sherpa 120 like they were made to do that. Handle and spigot if you want the water. About once a year I'll have to replace one when they get a pinhole in a corner or something. They'll survive a lot of thawing and freezing though. And they are only a couple bucks if at the end of a trip you want to slice it open and let everyone go to town for some drink ice on the last night.

You might find you are about to gain cooler space too. Grocery store ice blocks are half air anyway. If you were using three before you might only need one or two. Making your own is going to be way more solid and last longer.

We use the hard plastic white square containers from the dollar tree inexpensive perfect size freezes well they stack great in the cooler we use purified water from bottles we sit the 5 gallon water bottles yes we need to buy new white containers everyonce in a wile but the price is righ never failed us! They was easy takes a beating and once they start to melt they slip out easy

 

[Davey M]

I bought a set of these silicone bread pans a couple years ago on Amazon and they really work great. They’re 9”x5”x~3”, which makes pretty similar blocks to ones they sell some places. Highly recommended! If you’ve got the freezer space, just make a few batches throughout the week and stack these up and you’ll be loving them.

Amazon.com

 

[Senor D]

I found some one gallon jugs on Amazon, they look like anti-freeze containers. 5 of them fit the bottom of my cooler wall to wall. Fill them a few inches a time in the chest freezer. I always have ice cold water on the tail end of the trip, usually douse the TL, NFL coach style, at the take out.
I like this system because everything stays dry inside the cooler.

 

[jonseim]

Senor, is this what you got?

https://a.co/d/88wqPnt

 

[Senor D]

Senor, is this what you got?

https://a.co/d/88wqPnt

Those look like what I use. I couldn't verify because the listed dimensions for that link is a 12' cube, which isn't right. I measured the bottom of my cooler and found some that fit 5 wide and weren't too tall.