I have been away from my computer for a day and a half. So please forgive me if someone else is already answered this.
If I was Gannon spy logical mom, my mama who loves him so dearly, I would ask my ex-husband for all the things of Ganon's. She probably wanted to take as many things possible with her.
Landon's aunt said when they drove to Texas and it took him 12 hours to get there. I think they were in a van, they probanly took all of Laina's things.
So to me, it stands to reason that Landon would ask Al for as many things as she could take that belongs to Gannon.