I keep a few Opinel #8s around. I gave the #8 Trekking style with the red handles to my son's scout patrol. I dumped the little leather lanyard and made a longer and more useful paracord lanyard for them.
Another couple of inexpensive folders that I like are the older Buck 442 and 455 with partially serrated blades. The 455 is so small that it easily fits in the watch pocket on my jeans.
