Possible Clues:

• Fibrous network of the fruit of a tropical plant used as a hard sponge
• Hard rough sponge
• Bathtime scrubber: var.
• ... two backing a clean-up with this
• Can a numbskull raise a back-scratcher?
• Sponge made from a gourd
• Fibrous sponge
• Natural bath body scrub
• Sponge John having picked up a bit of fluff
• Sponge pudding from the east with filling of jam