Sawdust, sand, or shredded paper (Mawneys, RM7)

Wanted some absorbent material like wood sawdust, sand, or shredded paper please for my niece’s school science project please being whether 2 to 3 kg. sawdust, 5 to 6 kg. sand or / and 3 to 4 kg of shredded paper please to be collected at a day and time to suit you please and thank you very much for help and time, kind regards, harich.