Zentangle's strings are a bit of a challenge for some. "What do I draw?!?" So Linda at tanglepatterns.com has started a bank of string ideas you can use if you're stuck. I've never had difficulty coming up with a string but I thought it would be fun to try some of the suggestions people have sent in.
Tangles: Go 4th and Multiply, Künstler, Pop-Cloud, Tripoli, Wildwood
Tangles: Black Pearlz, Cadox, Combs, Cruffle, Go 4th and Multiply, Paradox variation, Tipple, Tripoli