What are the things you pick up that you neither want to sell nor carry around? Why pick them up in the first place?
Many things ...
Personaly im sentimental for example, so i dont sell old (but good looking, or just good looking) armor, just bcs i have found better one.
Or my Shar Cleric never wanted to sell her Idol, so she simply put it in camp so she can admire and worship it.
And then all those interesting magical (or story related) items you believe they could have some uses in the future ... necormancy of They, Donis letter to his father, etc.
