Dirt Cheap Roller Blade Shelf

My daughter's new rollerblades have been messing around for some time and they tripped me whenever I was in a hurry. I made a quick fix by an abandoned wood block and two unused brackets.

Step 1: BOM - Bill of Materials

I have to fix it quickly. I searched through my workshop, kitchen, garage, bedroom, ...
Eventually, I found something useful - a piece of abandoned wood and two brackets.