Manipulate tension to trigger new gains. Remember, hypertrophy is stimulated mostly by muscular tension. Muscles get the most tension where the resistance curve is at its peak in the concentric (lifting) point of a movement.
For dips, anchor a band with a heavy dumbbell at your feet. Placing the band around your neck looks awkward, but it will naturally bend you forward and cause the pecs to get into a deep stretch. This will also create more tension at the top of the rep.
Back in my small hometown in Texas, some of the more eccentric churches would hold these great tent revivals. Even if we didn't like their particular style of religion, we would still sit out in our cars and watch just for the sheer entertainment value of the show.