I grabbed Palthar's Sundry, a free adventure, from Troll Lord Games last week and found the perfect spot to drop into my current campaign. The map is a small 12 room Dyson, filled with some staple encounters.
I had given the players a treasure map already and planned on adding a coin, the second piece of the intro to the adventure, but my players jumped on the map this week! Palthar's Sundry is an out of the way retreat for a former adventuring party that died in the field. Some driders had taken over and looted the place and made it a cozy home for some spiders.
There's a painful trap on the stairs that repeats if the players don't watch out, but clever players will take it as a reward. The fights are straight forward and players are rewarded for being stealthy. The last fight is against 2 driders, which my 4 player, 3rd level party was not ready for. Running was the plan, but a few wanted the cash they assumed was hiding after the driders. After a good 40 minutes of intense discussion, they devised a plan. Cleverly, they used the environment to their advantage and cut the rope bridge spanning the 2 sides of the complex.
Palathar's Sundry is a good little dungeon to drop into your campaign when you need a small adventure for your party to stumble into or as part of your plot.