Here are two short videos of swarm catches. So fun.
Lots of different ways to catch swarms. Definitely my most favorite part of the hobby. On the video, my wife was really nervous on our first swarm catch, so she forgot to turn the camera the correct way. I caught this swarm in a cardboard box. Here is the video link:
Here is a video of a swarm that was on the ground - this is a very easy way to catch a swarm - I just put the box down next to it and they just walked right in: