My 10 must haves:
1. clipping masks, 2. grungy papers, 3. blending modes, 4. 2-3 fonts/LO, 5. photos, 6. text as a decorative element, 7. something "stringy" - stitches, strokes or loops, 8. flair, 9. paint splats, 10. watercolor brushes (use for paint, masking, as clipping masks)
Credits: AASPN, Katie Pertiet, Kim Klassen, TaylorMade, Crafty Button Designs