For small holes and even some larger ones Seam grip is really one of the best ways. if you can access the back side of the fabric i usually put a small piece of masking tape over the hole. trim and frayed or loose threads a the hole to help avoid having them stick up. A dab of seam grip covering approx twice the size of the hole. If you are in a rush or on a trip and need to enact this repair , mix a small amount of water into the seam grip and then apply. the water acts as a drying accelerant to speed the cure time. when dry pull of the masking tape. This is far more effective long term than any of the patching materials.