Megamod

Megamod is a great game which incorporates custom skill books, repeatable quests and weapon upgrades.

To use a book, equip it and target the player character, the script wont fire any other way.
Several quests made repeatable.
Farels garden critters replaced with aliens(level dependant) and they respawn.
Broken Hills mine and tunnels replaced with aliens(level dependant) and they respawn.
Any empty chest on map first load, and random encounters always, will have random loot added to them.
Scenery objects that have the same art as a container item, will be deleted and replaced with the item, then have loot added to them.