My "overnight stays" tend to be camping trips - so I tend to pack a lot of camping gear and only just as much as I need as far as clothing. All the gear takes up the most space so we pack personal belongings on the lighter side. Typically only enough to fill a small backpack. The more you travel overnight the easier it is I think to condense and only take what you truly need.
I used to bring everything but the kitchen sink - but it just ended up complicating things and making extra unnecessary work :).
You can help the HubPages community highlight top quality content by ranking this answer up or down.