For sure.
I pulled up your cap models in Cura to get a rough idea on the diameters. Then, some Googling showed people would build jetpacks using cardboard shipping tubes. Seems like the most common sizes are 2", 3", and 4", so I just ran with it.
As far as I know, there's no reason to keep any 6" diameter tubes on hand for a jetpack build, and I can't think of any Boba-related use for them.