Hello, long time no post... Anyone know of a mod that adds a container of some kind that's scripted to give you the option of depositing your entire inventory?

Prison.

You might like http://www.tesnexus.com/downloads/file.php?id=9835, allows you to customize what a container takes and then use a spell to make the container take the things you set it to.

Just get Reneer's Container Mod. It makes every container in the game safe as soon as you put anything of your own in them. Everything else will respawn normally, except for any that you are using for storage.