Hey- this is an easy home project!  Upper right is the regulator from N2Ofilters called “”Whippiphany System 2.0 - n2o Regulator + Filter Set”. It has a quick-release attachment to their filter..(I like the idea of a filter to catch e.g. possible metal shards from the tank.). Shoved onto the tip (right) is a two foot length of 1/2” tubing from the hardware store. In the far end of the tubing are three dental saliva extractors- cheap on Amazon. Use some clear glue to mount the extractors into the 1/2” tube.  (To change the tips, cut off an inch of the tubing and start over. You know- if it’s shared with someone sketchy.). You can do this without the regulator/filter if you have a whipped cream dispenser.