There are a number of museums not far from the house and there is something to suit most tastes. The Musée de la bande dessinée in Angouleme for example has complete history of French and American comics. The exhibits are in French, but if you have even a passing interest in graphic novels/comics it is a great day out.
The Zoo de la Palmyre maybe just under 2 hours drive, but it is well worth a visit and you can always combine it with a trip to Royan!
So whatever your taste you should find something to interest you.
La Maison Bois Charente 