Speaking of bags, thought I'd share my absolute favourite (along with a little how I use it). It's the Thule Subterra 25L Backpack, and I've missed using it since my uni converted
Thule Subterra Travel 34L Backpack Black | Snowinn
Thule Subterra | Thule | United States
"Thule - Subterra Backpack for 15"" Laptop - Dark Shadow" | Backpacks, Thule, Laptop backpack