Adventures of a Middle Sister: DIY Tie-Dye Swimsuit Cover-up. Plain white oversized T-shirt, tie-dye kit, scissors, needle & thread. Could use a T-shirt that's already colorful and skip the tie-dye step.
simple sewing DIY to help shirts that slide off your shoulders! Sew snap into inside hem of shirt and clasp it around your bra strap. Also helpful for bra straps that always seem to fall down even when tightened.