Well, I’m using “workboxes” to setup what is happening…. and my preschooler has “workboses.” Most of her boxes have activities she can do on her own (puzzles, colouring, painting, playdough) – and many are things she doesn’t get to do at other times. She generally does the boxes, or finds some dolls to play with…. (Oh, and the toddler is either in a high chair colouring/doing playdough, or in the playpen with toys).
However my 6 year old son has a couple of workboxes that he can do on his own….. they are things like…. puzzles, drawing practice, mosaics, or the leappad (very occasionally) – and during those boxes, I read to the preschooler or do something else with her. It might not be regular schoolwork – but it is independant work, and gives him a little break too.