I am taking down several items hung on our walls; this will leave about two dozen holes ranging from small nail holes to anchor holes about 3/8" in diameter. I am looking for a way to fill these holes that will look reasonable without painting – we have no matching paint, the walls have other imperfections, and the space is destined for a full paint job sometime in the not too distant future anyway.
It's a finished living space and the walls are drywall painted off-white. The point is to avoid attention-grabbing holes and have a finish and color match that's reasonable but by no means perfect (i.e., if it's noticeable from a foot or two away, that's fine, but noticeable from across the room is bad).