My daughter is 1 year old and has an issue squeezing the juice box all over herself...

I threw this together and might modify it some more to make it more toddler friendly, and less compressible.

My wife told me to make banana handles for it, since she loves bananas so much.

I'm printing this atm so I may update it with changes.

Created in Tinkercad using a banana model from @Booom model available here https://www.thingiverse.com/thing:2141725#

Measurements were done based off the "Apple & Eve Fruitables Apple Harvest" Juice box.