What do you free drip that others wouldn't dare?

Our community site is having a shortage of iv pumps to the point were I have a hard time getting channels i need for a case. What meds you letting free drip that you maybe shouldn't by the book but never had issues with? Or do you just calculate the drip rates? Ironically every time i go to the ICU the rns are using like 8 channels and half of them are running tko and lytes over an ungodly amount of time.