Capturing video doesnt cost the earth, you've probably got what you need right now
The equipment you need is probably staring at you, if you're reading this off a screen that was made in the last 5 years ... chances are its got a camera with it as well, your laptop / phone / tablet, even your old digital camera will suffice ... Think of all of the ridiculous, very poor quality videos that have gone viral they still conveyed the message (as poor as it was in most instances).
Recording video doesn't need to be expensive, you don't need to have amazing quality footage to convey a message ... as long as the content is good, they will see past the quality of the video! Stop letting perfect get in the way of better and get going with what you've got.
If you've got a camera phone ... that will do. If you've got a fairly modern smartphone, you've got near broadcast quality, even the audio that's recorded off them is amazing these days. Did you know that a lot of the video on the Oscar winning documentary Searching for Sugarman was actually filmed on a mobile phone (if you havent seen it, I highly recommend it). That's all I use, here's an example of one I made completely using my phone. The great thing about using your phone is that you can instantly capture stuff, creating masses of content that you can edit at a later stage. It's also a lot less intrusive than "proper" video cameras. There's also a plethora of software/apps out there that helps to edit it. Got a shaky hand, theres an easy way around that too. There's free software to take away the shakes, this guide by Digital Life - The Sydney Morning Herald gives you a good overview on how.
Want to take it a step further? Get your phone onto a tripod with these (I love them both!):
This little guy is how you tripod mount your phone, insanely useful and very quick to attach. The grip is spring loaded so you can quickly "snap" it into position. Its easy to attach to your keyring, and more than small enough to fit in your pocket. I actually keep mine permanently attached to my gorrilapod (the next item) ... to allow for "quickdraw" video recording! Its not quite small enough to stick in your pocket, but will easily fit into a bag.
This combination is the daddy if you don't have a tripod to mount your phone to. This pack comes with both the griptight and the gorrilapod (obviously both can be purchased separately but this option is cheaper). The gorrilapod works like a tripod but it can be wrapped around things too, so you can attach it to quite a lot of stuff. Joby also offer a magnetic legs version, which means you can "attach" it to metal parts, but beware. I purchased it, thinking it would be useful, took it on holiday and packed it with all of the rest of my stuff, near my memory sticks ... and it wiped everything off them! (if you didn't know, strong magnets and memory devices don't go well together). I've since purchased a non magnetic gorillapod and use it all the time.