There's no such thing as a routine ride, so I really have no routine prep. Call me careless, but on rides of about 40 miles or less, sometimes I'll just grab one bottle, and when out on a bike with tubulars (pumped to 110-120, thank you very much), go totally tool-free. Just phone, keys and mini wallet in pockets. Fixed gear bike has crazy impermeable tires or something that take a month to lose pressure, so much of the time there's no need to top off (and 60 psi is fine for those ) Maybe I have something too eat beforehand, maybe not. Always coffee, and bathroom, but that's the case whether I ride or not.

Prep for an event ride, however, is always a big production, and that, too, varies - by season, distance, distance away, weather forecast, nature of ride (casual or sportive or race) etc.