Saints punter Thomas Morstead wants his team’s fans to kick off the Memorial Day weekend with him — and in the process help his efforts to advocate for cancer patients, children and other causes. Morstead on Friday night will host a launch party for an apparel line dubbed Sprout 6, all the profits of which will benefit the punter’s philanthropic foundation, “What You Give Will Grow.” For the clothing line, Morstead teamed up with B NOLA, a T-shirt company started in New Orleans.