Another fun style of beaded jewelry is hemp bead bracelets and necklaces. Hemp can have a really timeless look, especially if you use the natural beige colour, though you can find it in many shades now. Jewelry designers who work with hemp usually prefer beads that are wood, stone, or glass, because plastic can clash especially badly with hemp. You could also experiment with clay beads, purchased or even handmade.
You can learn most forms of hemp knotting either by purchasing books or kits in a craft store, checking your library, or even looking on the internet.