What's In The Vise??

When you sit down to a few of the same pattern do you prep things out a head of time or just tie one at a time without prepping hooks and materials?

When I sit down to tie stinger style flies like pictured above I will prep things a head of time to help me crank them out faster. Sometimes when I try to force myself to tie when I'm not on the mood or tired after being on the water I will prep some cut shank style flies instead of tying actual flies to have on hand for when I need them.