Question about item sets

I use it for all of my most commonly used champions and champions I can end up getting stuck playing. Sometimes it just gets confusing switching between characters so often, so setting up a stagnant item set that I can use flexibly depending on certain circumstances helps a lot. It also helps with champions I like, but don't play often enough to always remember the builds I use.

For instance, here's one of my Udyr item sets for a role I don't play often :

 Spoiler

I put all of my most commonly built items for the role in a "standard build" section, then make another with items I need for instances like, "are they mostly AD?" "Are they mostly AP?" "Do they have a lot of crowd control?" "How fed am I?" etc.

This also helps me a lot if I don't play for a week, a month, or whatever and I come back and I don't know what to build.