Put a movie on for them ..... I don't allow tv in my daycare but my own school age kids watch tv or go outside during quiet time and that allows me to have some down time too. Or try doing some baking with them or get them to help prepare the afternoon snack. School goes back in 1 week so will be a non issue. If I was that parent I too would not want my 6 and 7 year old sleeping in the afternoon either ..... Quiet time yes ... Sleeping ? NO!