This week I found this super stunning triangle necklace by How did you Make This? I think this is a very interesting and inspiring project. This technique may be really useful for a large amount of projects, and it's actually pretty simple (although it requires strength and a good command of pliers).
I think the perfect final step for this DIY would be adding some color. You can do it with spray paint, as Grace from Stripes&Sequins did in this super easy project: she just painted a metallic chain with neon fuchsia spray paint. Anyway, you can also find rings in a wide range of colors.