What's a weekend trip? I've never had a weekend or holiday day off (other than Christmas day) so I only get to go camping for 2 - 1 wk vacations/yr. I take everything possible with me, except if I'm only camping in FHU CGs, then I leave the generator and extra fuel at home.
I bought my Aliner as a Hurricane bug-out vehicle after Katrina, so it's fully loaded (except for water) and stocked at all times. I just load the fridge, grab the critters and hit the road with my Aliner behind my little 4-cyl. car (enjoying 21-25 mpg towing and 30+ mpg when not - for maximum range when gas stations no longer are available - like after Katrina). It has all the amenities of home, just very little space inside to move around. Other than the standard camper amenities like: a king bed, microwave, shower/cassette toilet, 3-way freezer/fridge, ac, tv/dvd player/inverter, etc.
We also take with us: a screen room, an awning, a large Astro-turf door mat, BBQ grills, utensils, extra propane, tools, defensive measures, toiletries, a suitcase of clothes, a 6 day Coleman ultimate extreme ice chest full of water, soda, beer, extra food, etc.
I plan on getting a high-mpg pick-up truck soon to use as a dedicated TV. We will then be able to take more stuff with us, like our 2 little 125cc street-legal minibikes, extra fuel, riding gear, more food, water, etc.
Chip
