You can print a free copy of my generic schedule here and I have linked the other activities throughout this post if you would like to use them. It goes something like this.
7 TV or play until Breakfast & Devotion
8 Brain Games
10 Play Outside
11 Lunch
12 Monday = Craft Project
Tuesday = Library
Wednesday = Cooking
Thursday = Service Project
Friday = Go Somewhere Fun
2 Free Play
4 Tidy Up
5 Dinner
6 Play with Dad
8 Bath, Books, Bed
Each afternoon we have a different project each day. I won't take time to retype them all since you can print the complete list of crafts, recipe ideas, service projects, and fun places to go. Many of them were inspired by things I pinned on Pinterest. You could add hundreds of things you could do with your family just by doing a quick search of "family fun" at Pinterest.
So that's my plan. It's really not as complicated as it may look. I encourage you to make your own plan so you can be prepared for the kids being home all day. Even planning the daily project activities in advance allows you to make sure you have all the supplies so you're not having to cancel the fun or make a rushed trip to the store with kids in tow to get stuff. Also, by the time I factor in Vacation Bible School, swimming lessons, drama camp, and vacation, I'm really only planning about 6 weeks worth of stuff to do. Pretty easy to do when you've got a plan and makes life so much more joyful!