Cigarette smoke machine

Hook 3 ciggies up to a super cheap auto fuel siphon pump and you'll have a smoke machine

If you flip the model upside down you don't need supports, any material would work

Alternate use is to just smoke heaps of cigarettes with it

Ciggy holes are 8mm, outer diameter of the other side is 10mm

https://www.supercheapauto.com.au/p/sca-sca-fuel-siphon-pump-transfer-kit/618008.html

https://www.tinkercad.com/things/60sKVtFV9AX-cigarette-smoke-machine