I use the Solimo Isopropyl Alcohol from Amazon Basics. I usually put a tiny hole in the foil seal to allow the alcohol to drip out. Sometimes the foil tears, leaving a hole that lets too much alcohol out with each use. Rather than continuing this waste of alcohol, I've modified Higglyblarg's Threaded Nozzle Tip to fit the Solimo bottle. Now I get only a small stream with each use.
The original model was widened by 5% and the space above the threads was increased by 4mm to fit the bottle. Above the threads where the model begins to taper, I also added a small lip to prevent alcohol from leaking around the threads.
I printed the model inverted to prevent the supports from mingling with the screw threads. In my tests, the support created a rough surface within the screw threads that prevented the model from fitting on the bottle correctly.
The author remixed this model.