Set #1 in this three-pack steep wall series is the easiest to grip, coming in at V1 for vertical walls. This set is an excellent choice for kids in lower angled terrain.
You can utilize all three sets hyperlinked below for the home wall climber. The organic shapes fit well around your existing bolt-on holds.
The incuts range from 3/4 of a fingerpad to a full fingerpad deep. With lots of turns and curves in the designs, these are an excellent choice when you want to grip only certain sections. For example, there is a 3/4" deep, three fingers wide rounded edge on the far right of the smallest hold in this set.