Kourtney Kardashian and Travis Barker just continue to build their relationship, spending time with not only one another, but their kids, as well.The couple was spotted stocking up on a few snacks while making a pitstop on their trip home from the desert with two of Kourtney’s kids, 8-year-old Penelope and 6-year-old Reign, on Monday afternoon.The Keeping Up With The Kardashians star opted for a comfy look perfect for a road trip, wearing a pair of running shorts and an oversized T-shirt.