You could try www.doschdesign.com and get some of theirs. There's also http://www.3dtotal.com/textures/ As far as making them yourself, grab a digital camera on a cloudy day - I'm gonna give you an example for a tree - although I have a feeling you're talking about maybe something like wood floors? Set up a tripod, and just circle the tree, photographing the entire circumference - or as much of it as you feel needed. In PS, stitch them together into one image. Once that it stitched, go to Filter>Other>Offset. Choose some fairly significant pixels both vertical AND horizontal - maybe put the edges in the middle? Now, with whatever tools you want - usually the Clone (rubber stamp) tool or the Healing Brush (the band-aid looking tool) you can sample other areas to get rid of the hard lines - NOW it is tileable without edges! Once you have the photographs of whatever it is (wood, metal, rocks - whatever) you want to make a texture, THIS is how you make it tileable. Good luck and have fun- -Lew ;-)