What are some mods you consider must-haves, but that aren't very well known? I have all the mods I will ever use from the Nexus top 100 and top 25 sections, but sometimes I come across a little gem that makes me wish I would have known about it sooner. Post some of your little-known favorites.
My personal opinion on what counts as lesser known is less than 100 endorsemants on the Nexus. Feel free to post whatever mods you want though, that's not a thread rule just some advice.
I'll start off with a couple
http://skyrim.nexusmods.com/mods/19403 - Makes all traps more deadly, simple with no scripts and works good with 1.8
http://skyrim.nexusmods.com/mods/9887 - A few changes to crime in the game that should have been in vanilla