Household tip #3475853477, but not from me, for I just figured this one out today.
Fold a matching fitted and flat sheet together, place pillowcase on top, store inside the second pillowcase. Three sets per bed if you're listing toward extravagant, otherwise two sets per child, one on the bed. I would go the hardcore minimalist route and just wash and return the same sheets to the bed and only have one set per, but every now and then the puke fairy will visit and remind me that I need extra sheets.
Now my cedar chest is organized and I don't have to unfurl fifteen sheets before I find the ones that fit a big bed versus a twin.
Okay so you all do it already and I'm slow. I realize this.
Extras? Dropsheets, baby. I am the messiest painter alive.
