I have a tool bag with all my misc wrenches and tools - and 2 full socket sets, I try not to keep too many "extra" things on the shelf if needed -

My detailing shelf though, along with my towels, is starting to get out of hand, I should really start washing the cars more with how much stuff I end up accumulating -

__________________
2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards