Hermione
Great post!
I'm a believer in training children (and OHs) to take responsibility for their things from and early age! After all, we are may be Household Managers, but we are not slaves - even if it feels like it sometimes!
I'm part way through my linens - they have been piled on the spare bed for at least a month some time. 
The key here, for me, is to decide how many sets, for different circumstances, I really need (applies to table linen and towels, too,) starting from a basic 2 sets per bed.
I have kept 2 nice tartan sets for a single bed as I have a (baby) grandson, who may come to stay at some future point - these would also be nice for an adult visitor, if needed. For the two double beds, it's the basic 2 sets for each, as I live alone. YMMBD
Towels and flannels, I use 1 per week - after all we are clean when we use them (at least, adults should be!) However, I do know someone who showers twice a day, using 2 fresh towels each time! (Wouldn't happen in my house!)
I don't uses table cloths or napkins on a daily basis, but have a set for posh occasions, and a Christmas set.
I haven't found it necessary to have bed-linen strewn everywhere, as it is easy to hold and feel the items while folded, although I may open up a pillow case, if necessary. (None of my hand-me-down linen is old enough to have worn thin, yet.) Fitted sheets are another matter, for judging the size, as some are the same colour, but different sizes!
HTH