If the ammo cans and gun safe don’t keep my electronics safe ill be screwed. My old tablet with all my games will be ruined and I won’t be able to survive.
Read about Faraday cages and how to build them.An old microwave oven is an excellent Faraday cage.
To be effective, the cage in which you put your electronics needs to be electrically grounded. A 8 or 10 gauge wire attached to a 6 ft grounding rod sunk into the earth should absorb just about anything an EMP might deliver.
If your gun safe has an electronic keypad, you might not be able to open it. One gun safe manufacturer couldn’t give a definite answer as to whether or not an EMP would affect the locks on his safe.