Do you own a Philips LatteGo? And hate how the foamed milk goes everywhere exept the cup. Look no further this funnel redirects the milk downward into your cup.

Printer settings:

Filament: PETG (Please use a food safe filament that is resistant to some hot milk)

Layer Height: Variable or anything lower than 0.2 mm

Supports: No

Infill: 100%

I printed my version on a BambuLab X1 Carbon.

Onshape model