got a kreg jig for mother's day and tried it out on that dead space in my broom closet. I made $10 shelves, but in a "Z" shape instead of a "U" shape so I could attach from below and have more room on the shelf for cleaning supply storage.
I used a 1x6 for the shelf and spray painted them black with some paint I already had. So easy! I used a 1x4 with a block of wood to hold up one end of the shelf so I could screw it into the cabinet. Then leveled it and added second screw. Awesome first project! I learned a lot and got a place to put my spray bottles.
Sorry for the dark photo, my cabinets are black cherry.
Estimated Cost
if you don't count the kreg jig, under $10
Estimated Time Investment
An Hour or Two (0-2 Hours)
Finish Used
spray paint
Recommended Skill Level
Starter Project