You can buy floating shelves in stores or online for $20 to $80 each. But before you do that, consider building your own. For about the same cost, you can get the exact size, thickness and look you want. You can even finish them to match your trim or furniture. And your homemade shelves will be sturdier than most store-bought shelves – ours can support about 50 lbs. each. Plus, you’ll earn serious bragging rights when you’re done.