Although I am not a SOTA activator (yet), I am an enthusiastic WWFF park activator and I have run into equipment problems. I now run a test run from home before I leave for my activation. I now carry a spare paddle and a spare radio when I go out.
de W6LEN / Jess
Indeed, I have a tiny plastic box with a few SOTA activation essentials (Power-Pole connector with bare wires, tiny EFHW antenna, tiny straight key, pencil, various cable ties, tiny headphones, jack connector, BNC male-male connector etc.). I put this together after a power cable failure in the field. I never get for a SOTA summit without it now