I have folders on my PC under Quilting marked as "Future Ideas", "Scrappy Quilts" and so on so I can find them easier. If I see a quilt either on this website or somewhere online, I'll save a photo of it to remind me. Sometimes I'll take the idea into EQ8 and make my own version of it if I can.
When I was looking for ideas for the French Braid pattern, I saved a bunch of photos I found online in a folder under "Working on" for use in color arrangements, various ideas someone might have added to make theirs personal, etc.
I have other folders listed as "PP" for paper piecing, "Stars" for projects with star blocks and so on. Then if I save a pattern from a website, I'll put the PDF in their folder on my PC. Got lots of folders out there that's for sure. I try to save a photo of the quilt pattern along with the PDF pattern so I don't have to open it to see what it is.