I've got an idea...

[JStarStar]

Hehehe... a hole saw... 24mm tube... epoxy... plywood fins...

 

[BlueNinja]

May be against the safety code, I know metal bodies are. If not, go for it and make sure it's stable

 

[AlexM]

Its a plastic bank, not glass.

 

[BlueNinja]

oh. my bad. Didn't see the coin slot

 

[KarlD]

Clear lexan fins......

 

[Micromeister]

Heck yes! go for it but unless the OD is smaller than I think you'll need at least a 3 D12 cluster to lift it Clustered Odd Rocs OH Yea!
If it's the size of a 2 liter bottle than a single D will be fine. A hole saw isn't the best choice for cutting, a blade type (compass type) circle cutter will make a much more accurate and easier to fit&fill motor mount, stuffer tube hole. Yes it takes about a dozen passes but the hole come out SOOOO much rounder and smooth

sorta like one of these

 

[Elapid]

naw...

38mm


you can always adapt down.