Am just posting this to complain about my own lack of observational skills.
Just got a Thieves Guild quest asking me to hunt for 3 pieces of "clean" dishware.
Did not realize my Skooma Pipe treasure that my character carries was classed in that category, and it got turned in and taken from me as part of the quest.
Now have to find, steal and launder another.
If you are like me and carry Treasures that relate to your character in role-play manners, be careful with these quests.
"If you want others to be happy, practice compassion. If you want to be happy, practice compassion." -- the 14th Dalai Lama
Wisdom is doing Now that which benefits you later.