The mesh path and walkway kit is a kit designed to let you add swooping, curvy walkways through your parks, towns, or whatever else you can think of.
Includes a wide range of pieces, which can all be intersected to create your own unique intersections. You can read more in the readme.
The vast majority of these pieces are only 2 prims. There are a few that are more, but they're almost entirely 2 land impact.