1. a packet of wet wipes will help. you can pick up some in a soft pack instead of the plastic boxes...easier to pack.
2. instead of carrying a bowl and a cup, just carry a bigger cup. you can eat AND drink out of a cup and reduce weight. just take a spoon, ditch the fork.
3. batteries or even better a solar charger with a slot for recharging batteries. reduces weight.
4. a whistle to attract your partner's attention. beats shouting at the top of your lungs
5. a small mirror to reflect sunlight at the rescue party's helicopter in case you are lost in the remote area.
6. Duck tape. ultimate solution for all problems.
Goodluck.