We have 5 children so laundry in itself is a full time job. One way I have made sorting clean laundry easier is by purchasing different brands of underwear for my three boys. I also purchase 3 different kinds of socks (no-see, anklet, and crew). When folding clean laundry I can easily put the clothes in their right piles just by looking at the brand of underwear or type of sock. It also helps by sight to tell the correct child to get their dirty socks out of the bathroom/family room ;) The girls' laundry is a little easier because their socks/underwear are colored in "girlie" colors. Their age difference is a big gap, so they are easily sorted by size.