A very nice place to go is the Historic Open Air Museum. It shows furnished houses, living history, tooling, etc. of the iron age and the middle ages. In summer it is open all week round, in winter on Sunday afternoon only. In teh holiday period there are nice special activities for kids.
This tip has the address "Historisch OpenluchtMuseum Eindhoven Boutenslaan 161 B 5644 TV Eindhoven"