Old Navy is teasing us with another One-Day Wonder Sale. This Saturday, June 30, features its popular annual $1 Flip Flop Sale. These solid-color styles retail for $3.50 each. Sale items don’t include the metallic, wedge, leather or embellished styles. Stores open at 7 a.m., so arrive early for the best size and color selection. Limit five flip flops per person.