These are some beverage can holders that I designed to use in my own pool. 
They fit most of the the Intex / Bestway tubular pools, or any other brand that uses tubes between 46 and 52 mm tubes. 

There are four versions: 
- Without any label
- With a “Hold my Drink” label
- With a “Hold my Coke” label
- With a “Hold my Beer” label

The included 3MF has the preferred settings for each part. 

In order to hold on high temperature, these should be printed in ABS/ASA or PETG, but even a Light color PLA will probably work just fine.