A while ago I made some six packs out of 7mm ply wood. They're made to suit 500ml Grolsch swingtop bottles, but they should fit many other sizes and if not, you would just need to make some simple adjustments to the measurements. I thought I'd post a bit of a build demo.
They look like this.
They look like this.
![gallery_23372_1054_38891.jpg](https://proxy.imagearchive.com/98d/98da462b1af659753732992555f8ce45.jpg)
![Six Pack Build 01..jpg Six Pack Build 01..jpg](https://cdn.imagearchive.com/aussiehomebrewer/data/attach/52/52771-Six-Pack-Build-01..jpg)