As the process occurs, there will be drainage from the carcass. Once a week for 4 or 5 weeks, someone must open the bag and drain off the liquid. Refill the cavity also. Repeat this process until there is no more accumulation of liquid in the bags. Wrap the mummy in gauze strips or ripped muslin strips.
Students can create a sarcophagus for their mummy.
Use shoe boxes. Spray box with gravel paint. Decorate with hieroglyphics and pictures of Egyptian gods. Students can bury the sarcophagus and dig it up in the spring. The mummy will be in the same condition.