I made some copies of the MSR camring guy line tensioner. The original ( and there are commercial knock offs) had a design that really appealed to me. Instead of rewarding the company with my money I made some copies.
Totally not worth ones time to make the copies, the originals are only around 10 bucks for four.
But anyway, my copies work really quite well on the old shady boy awning. And even though there are a 101 other guy line tensioning methods and gizmos, I very much like the look of these.

Blog post here with a couple of pics

https://shufti.blog/2017/05/21/vanagon-awning-guy-line-tensioners/

Alistair