i would cut out the chit chat. stop feeling like you have to keep the conversation going. at some point you need to make it clear that you are reverting to some degree of normalcy - you are not their maid or their entertainer. i would switch on the TV for them; if they are computer proficient i would offer them the use of the computer; i would watch TV with them without talking unless i felt something was interesting enough to comment upon, or read a book along with them as they watched themselves, making sure the remote control was conveniently within reach... and then i would do whatever i wanted to do. keeping conversation going should NOT be a one way street. they would probably be relieved if a 'comfortable silence' became the norm in your household while they're visiting - nobody likes to feel under pressure to prolong chitchat once small-talk topics have been exhausted. i would also encourage visits to the beach or activities that didn't require a lot of talking - leisurely, scenic walks etc. relaxing without requiring a lot of chat.