I like the advice that has been given here, and I agree as you don't need all the flash gear to produce a good music video. From my experience it takes a lot of planning, storyboard (stick men is fine yes),and understand the song your put image too. My rule is with my clients as I ask what they want, and they tell me something that they like, I then think how to either do just wat they want and think big with what little I have, or I exspand on their ideas depending on their song.
I do alot of low budget M videos due to my clients pocket. Just keep in mind a few things of our past and history, it took Thomas ed to invent the light bulb right? and he saw it this way, it took him 2000 tries to get it right, he was asked about his 2000 mistakes, he said they were not mistakes just 2000 ways of how not to do it. In other words not everything needs to be perfect, but if it works for the song and whatever you do have in your pocket or clients pocket, then it will happen and not get forgotten.
And when you do need the look that you think the mistake happend with once before may end up being a blessing on the next vid.

So if you got the basic gear, then you got a good start. Try using the best computer there is around!? your brain! trust it and work it, don't be scared to make mistakes cause you will, but that part of the fun cause you then narrow down from 2000 ways not too do it that way to 1999 to go.

Hope some of this helps?