- Oil (I like to keep on hand the cheapest oil I can find at the store specifically for crafts like this, or playdough, etc)
- An empty plastic bottle with cap
- Blue Watercolor (ours is from Discount School Supply), food dye would work fine too
- Other objects that represent the ocean (sand, shells, a shark)
- Liquid measuring cup (only because it is easy to pour from, we didn't use it for measuring)
We then poured oil as high up as it could go to the top and capped it, turning it as tightly as I could. Last time I think I put special glue inside the cap to make sure it stayed sealed. I didn't do that this time, as I felt secure that I screwed the top tight enough that it wouldn't come loose.
Voila! My son had fun putting it up to the light and watching the waves tumble back and forth. Such a gratifying easy craft that I highly recommend!
Things Bode learned:
- Oil and water don't mix
- Oil is actually lighter in weight than water and floats to the top.
- The watercolor mixes with the water and not with the oil, because it is water-based.