I have seen interviews with crash survivors who recommend keeping it in your pocket. Because you will not remember to grab it when exiting the plane and so it goes up in smoke unactivated if the plane burns.
I think you could sign temporary MR on a sheet of paper to cover a flight. But I am no lawyer! Your licence/medical arrives digitally, can you retrieve it from archived email?
And as I posted earlier, I use Google but a description in words to search. Sometimes I waste (enjoy) an hour doing it. I agree image search is cheating, but the few times I tried it for an aeroplane it always found a Cessna 172.
Weight is a problem. I have both RAA and GA licence/certificate but fly GA due weight. I am 122 Kg and cannot carry a passenger and reasonable fuel for a trip with small baggage in RA types. Also check seat weight limits which apply in RA, due to safety issues with vertical G forces and structural failure in an accident. I am hopeful increased weight limits in RA may solve this eventually.
Back in the 1950s my uncle Lyle had just got his license. He took his older brother, my uncle Harold, for a flight from Bankstown. I think Harold's face tells it all.
(Hope I didn't post this previously)