He has a list of things the Code asks him not to keep.
He doesn’t keep the things themselves, of course. He would never harm his master, or his master’s reputation like that. Others – younger ones – look to him, a padawan to imitate.
He keeps the memories of them, those moments. A trained Jedi knows many mnemonics.
He takes them out sometimes, only sometimes, examines them from every angle, reaches for detachment. Who knows, he might even achieve it one day.
Pining, so much pining; this is a gorgeous and poetic glimpse into Obi-Wan’s soul, as well as achingly sensual when Qui-Gon unavoidably catches on.