8 Pack - L 11" x H 6" x W1.5, 5mm Thick Black L Shelf Bracket, Iron Shelf Brackets, Metal Shelf Brackets, Floating Shelf, Shelf Supports with Screws

1 x 12 common boards from Home Depot or wherever are pretty cheap if you’re on a budget, get a cheap 20 dollar laser level and some brackets like these it’ll probably be overall cheaper than the route I took https://a.co/d/05UMYtsp