Join the gym & take advantage of the crèche!! This is my stay sane as a SAHM survival tip. I go to the gym about 3 times a week & DD loves the crèche. Its exercise, its a social life as you find that other mums tend to do the same classes regularly too so you meet people and its a break from the kids!

Join a playgroup - really great for meeting other families in your area & its nice for kids to play with other kids doing crafty stuff or just different toys.

Have a list of parks around you (especially ones with coffee shops nearby!!) that you can go exploring when you have run out of other ideas.

Good luck, its hard somedays but I wouldn't go back to work if you paid me ..oh wait...being paid is the point