Where is a good family day out for the easter holidays?

Where can we go for a day out that ain,t gonna cost a lot of money but will be nice in the west midland area.
Answer
How about the big outdoors? when it is good, take the clan out, pack some sandwiches etc into your rucksack, then get out and walk, make a competition of it by obtaining some books on wildlife, or setting the kids the target of finding certain tress, shrubs, animals. walk them till they are exhausted, let them make the pace, run around, have a picnic. cheap day out.