When I first decided on getting a rigid heddle loom, I was a bit worried that there wouldn’t be many patterns to weave with just two shafts. Then I came across handweaving.net and was pleasantly surprised at the number of two shaft/two treadle patterns that this wonderful free website has.
Scarily and excitingly, there are a bazillion more for 3+ shafts and treadles. You simply couldn’t weave them all in a lifetime I think!
So, if you’re comfortable with reading drafts and you are looking for inspiration, then check it out. The search function isn’t always perfect and some of the thumbnails are a bit teeny, but those are completely irrelevant quibbles in the context of what an amazing resource it is. I also love that you orient the draft to any of the corners so it doesn’t matter if you prefer your treadling order top-to-bottom or bottom-to-top.
One trick I would suggest though is to print the drafts in greyscale to get a full idea of how the pattern will look. It may just be a personal thing, but some of the colour combo’s get in the way of me really seeing the patterns.