One of the suggestions was to use iron fillings in water with magnets. Since I couldn't find any, I went to the hardware store to find a piece of iron to file down, unfortunately they didn't have any iron besides curtain rods, which was too much. I also read online you can get iron from dirt, so I dropped dirt over magnets. I did get some iron, but only a little and looking at the time frame it would take way too long to get a decent amount to work with. So I ended up getting steel wool and cutting it down to small pieces.
I also had iron copper plated BB's, and also dropped that in water. It was magnetic, but it was hard to get any movement from the BB's since the magnet can only control them from the sides but not the bottom or top. I was using 6 magnets, but maybe stronger magnets might of worked better.
Also from class discussion, it was suggested to use materials that resist water. So I used vegetable oil, which gave beautiful motion in the water, but visually the colors weren't as pretty. Also, I was having issues with shadows over the lights when dropping the oil, and I need some sort of light rig where the shadows won't be visible on the camera but I can still drop the material in the water. So for now I used UV light to see what it would look like, and dropped BBs in it but they didn't show up as well, but the motion was there.
Since the only paint I had around was fluorescent tempra paint, I used that under the UV light. It gave very neat motion and was aesthetically pretty. And using UV lighting it eliminated the shadow issue.
I also did some research into Ferrofluid, which is a magnetic liquid. Unfortunately its quite expensive to buy 50mL $40 online. It is very possible to make with some work, and I found some diy here.
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