one way to mark your Bible! Use colored pencils to mark your scripture in the corresponding color and place a small colored dot (available at office supply stores) folded over the page lining up with the subject.
Origami is a little tricky for them because they don't have the dexterity, but with a little help they made origami bookmarks and christmas trees as an activity. They had fun with it. Folded Paper Heart Book Page Marker – DIY