Gosh, where *don't* I find scarves?! I have them in all shapes, colors, patterns and sizes. I don't like the small squares, but I have tons of the long rectangular; in cotton, jersey, silk, open weave, etc. I used to think that I would find the one perfect weight and size, but I have discovered that the ideal changes depending on the shape/fit of my top, the season, and the style of outfit (casual, work, etc) and I am better off buying a scarf that I find pretty and figuring out an outfit to wear with it later. Sometimes it can take a month or so, but once I do I can't believe it took me so long to figure ways to wear it, and I start wearing it in many different combos.
But because I buy them on whim like this, I don't spend a lot of money on them. I find a lot at Target; I breeze through the accessories every time I am at the store because their stock of scarves can change fast. Don't even bother waiting for sales, just grab and go; they're usually no more than $12 anyway.
I have also found scarves at Kohls, J Crew Outlet, Gap, Martin + Osa, even the Brookfield Zoo! Sometimes the quality doesn't last or it snags on something and is ruined, but that's a pretty small percentage of the ones I have now had for a few years and keep on ticking!