How much black cellophane would you be needing? A quick Google search turned up 5m and 10m x 80cm rolls of black tinted florists grade cellophane on amazon and ebay...
Cosplay in progress
Pokeball costume - 90% done. Shiny Whimsicott backpack to do
Bonaparte (DTP) - 20% done. Some materials gathered. Planning.
Batmobile (TAS) - 25% done. Some materials gathered. Planning.