We've started doing themed "baskets" for college bound graduates. We've gotten so many compliments. It started because I went way overboard OCD organizing bins for my DS to take to college and everyone kept saying how great it was that he had so much stuff in such little space.
Laundry: use a laundry bag (with backpack straps - best thing ever) filled with detergant, fabric softener, Shout sticks, quarters etc
Shower: portable shower caddy with shower stuff, washcloths
Tools: the best bin I packed for DS to take to college was just a lidded box with a screwdriver, hammer, duct tape, Command hooks, flashlight, sewing kit, first aid kit. He was one of the most popular kids in his dorm because people knew he had stuff when they need
Office supply box: pens, pencils, sharpener, post its, markers and highlighters, paper clips, stapler, tape, stamps
I also agree with the umbrella idea. DS laughed when I bought him one and now he's ever so grateful for it