I made this icing/frosting nozzle to attach directly to an icing tube I bought at the store. It was a bit of a tight fit, but I was able to press it on and pull it off without too much of an issue. Currently, I've made 2 nozzles:

1. Point Nozzle - Directs icing to a 0.1" point
2. Flat Nozzle - Spreads icing out over the whole width of the nozzle

I'm more than willing to make some more, just suggest what design you'd like in the comments.

Happy Printing!

- Ty10y