It’s the most wonderful holiday of the year: the state sales tax holiday! From now until 11:59 p.m. Sunday, you can stock up on school supplies and clothes without paying that annoying 7 percent tax. We’ll never quite understand the exemption list — baby blankets, garter belts and wedding attire are exempt, but no computer peripherals except cheap printers are — but, hey, if you ignore the heat and the lack of Santa Claus or the baby Jesus, the sales tax holiday is like Christmas: Everyone packs into Wal-Mart, and retailers are full of good cheer. So shop ’til you drop; you have 10 shopping days until school starts.