I notice alot of questions making for guys.
Ideas:
Use fabrics of favorite of the guys (football teams, camo,raceing ect.

Crayons caddy, colorbook bag with crayon caddy
Computer case
bed caddy ( a favorite I made a few years ago)

Fleece
hats,scarfs,glove set
sleeping bag

Garage
lg tote get $ greese rags at $store
roll up wrench & screwdriver case
bucket cover with pockets

Simplicity 3731
Back seat organizer
trash bag
cd holder
map holder
favoite is trunk organizer great for kids rooms for toys

Your list is great:) I would add camo or sports team pillowcases.