A few posts ago, I linked to some beautiful crocheted bags. I believe they were done in Tapestry crochet. This technique produces work that appears tightly woven and can incorporate geometric designs you can graph out yourself. Numerous colors can be used.
I found another site on the web that has some free videos and patterns in Tapestry Crochet for you to try. If you do, please comment and let us see what you come up with. I’d love to see your work!