Not really, if its something that can be a repeated pattern you can make it seamless/make it into a tile and just copy it over and over until its big enough to cover the spot you want.
Stuff like sand, gravel, etc you really just need enough to indicate that it's that texture. if you're drawing hair you dont need to draw every strand of hair for someone to know its hair, right?
even stuff with bricks/stone/etc, they're not really precise patterns so you can just go hog wild like so:

being messy makes it read better than if you were trying to make calculated patterns with them.