+20 on patience...
IMO/IME, a 3L flask is a better starting size. Also learn to use the pitching calc sites, like yeastcalc.com, and learn to make stepped starters. If you can't remember the 100g:1L ratio (DME to water) then get it tattooed onto your arm.
Looong handled tongs are also something you should get. Something in the ~18" range. Stainless of course.
Spray bottle to put some Star San solution in. It helps stretch the Star San that way. Also helps to have a bucket you can dedicate to having Star San mixed in. I almost always have some in the bucket. IF I've gone a longer time between batches, or used almost all of the previous batch up and it's more than a few days (a week or more) before my next brew-day, I'll leave the bucket empty. Otherwise, I'll mix up more to have it ready.