Nozzle
thingiverse
I'm using a homemade nozzle and it's working great so far, just for kicks, since I was also missing one on my bug spray. The hole might be a bit too big but then it would have issues spraying correctly. I fixed up the clog in the nozzle with an acupuncture needle - no problem at all.
Download Model from thingiverse
With this file you will be able to print Nozzle with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Nozzle.