Top row:
Direct: Direct flash on camera
Bounce: Bounce flash no diffuser
Cut: Milky plastic diffuser with bottom removed (Delmonte baby juice bottle)
Solid: Milky plastic diffuser with bottom intact (Delmonte baby juice bottle)
Row 2:
BBQ: Clear, thin plastic bottle (Barbecue sauce bottle)
Syrup: Clear bottle with silver reflector on back (Pancake syrup bottle)
Paper: Plain white paper reflector behind flash
Bubble: Bubble wrap bag

Except for the direct flash image, all were taken with the flash head pointed up.
Uncropped images shown on previous entry.