I tidy up as soon as the darlings have gone, put all the toys and games away and sit down with a cup of coffee. Over the next couple of hours I find: Lego bricks under the sofa, jigsaw pieces under the cushions, wet pants on bathroom floor, tractor under the table, hair clip and used plaster in sink, dolly's clothes on my bed, spare room duvets and pillows made into a den, empty fish food container beside pond, gravel all over the grass, unripe raspberries picked and discarded, apple cores in the recycling box, coat hanging up which will be needed in the morning, empty jelly wrapper in cupboard. And a precious cuddley which will be needed at bedtime.
Thank goodness they only live 5 minutes walk away.