In the mornings if I haven't had a shower by the time they get up, I'll turn on either noggin or PBS kids while I shower/dress. TV is off and we eat breakfast at the table, talk a bit, what are we doing today, etc. Then it's showers or baths for them, dressing for preschool, etc. If there's time afterwards I let them watch a little more. For the rest of the day, we just stay really active! We don't make an official distinction at all of entertainment vs education. We feel that they are learning no matter what they're doing....it's just a matter of choosing what you would hope they'd learn and what habits you hope they pick up and making those fun.
A basic week schedule for us: Mondays we don't have anything planned after preschool but we like to go to a nature preserve about 2 miles from here and hunt giants, explore the woods, etc. Sometimes we have games based on books we've read or I've told child-sized version of to them (Robin Hood, Swiss Family Robinson, Heidi, whatever). If the weather isn't cooperating, we can play games together, sing, wrestle, or I'll get them started playing together (ball, action figures, whatever). My youngest is 16 months old but my oldest is good at teaching him how to play when I model it for him. Kung Fu classes Tues and Fri, Awanas on Wed, and Thursday is our special day to do something together (catch a matinee, go to a bounce house place, Chuck E Cheese, the farmer's market, the playgrounds or parks, go for a walk and talk, etc. Saturdays / Sundays: we have church on Sunday and try to do something like the beach, a park, or a day trip to do something interesting like tour a farm, climb a lighthouse, something "touristy" or family fun on Saturdays. Saturday mornings though, the boys have "dad time" while I do weekly shopping and all that before we do whatever we've got planned for the day...or occasionally, he'll have a day long "dad date" for the kids. We practice writing, reading, math, read books to the kids, practice a little soccer (that season starts in 2 weeks, and the oldest is good and it is hillarious and so fun to see the youngest try), practice kung fu (we are the students and he is the teacher and takes us through his whole routine including warm ups, which is a time to bond, we get a little exercise, but we're building his confidence and skills too), practice learning his Bible verses and what that means for his Awanas, we eat our meals at the table, and whatever time is left, yeah I have no problem at all with him either playing little games on the computer (we like starfall.com or other educational sites where you can play online puzzles, practice putting words together, etc) or watching some TV (Dinosaur Train is greatness for little guys). I think what you should do is make a list of what you want their days to look like, what is important for them to learn and do, and make sure the "good stuff" is done. After that, free time can be free time, however they want to spend that time is up to them (There's not much of it). Sometimes they rest, look at books, watch TV or a movie, or play with their toys. Also, I try to get the basic chores done at our house before preschool is over (dividing the weekly chores to do a little bit every day...the house is not perfect, but good enough for someone to come visit....but if I haven't finished "chores" they are either helping me or I'll put on a video or Wii for them). I think Wii is pretty neat in that they're not just sitting there watching some stupid sitcom and drooling mindlessly. There's some fun, some action that they're taking, they're thinking especially if competing. And fun is good. And now....time to get the boys up! Everyone's sleeping so late today!