One strategy for Amazing Alex The Backyard level 2-9, called “Double Whammy”, is to place the boxing glove, facing leftward, under the existing 8-ball. Put a pair of scissors above the elbow joint to cut the rope of the first balloon. Angle the shelf to push the balloon into the soccer ball, pushing it off the right edge. The difficult part is positioning the other pair of scissors to not only cut the rope of the other balloon, but also deflect the ball into the last star.
If you have a different strategy for completing this level feel free to leave a comment below.