1. I would leave it. Since it's been 5 years already since "IT" happened I am sure I would already have one if I wanted/needed one. Since there is only 3% of the worlds (previous) population alive there is likely more then enough of these for everyone to have 2 or 3 of them!

2. If I had one of these I would likely be using it for cooking. I know this is a terribly unoriginal idea but since it was specifically designed for that job that is the job it will do best. If I needed a weapon I would have already gone and scrounged several of whatever I needed. The right tool for the job, after all.

3. This item would not help me much and would be way down the list of things to acquire. Man has made many contraptions over the years. This item is one that has some only a small amount of practical value. Give me some rope, some clothes and a good knife and I'm good to go. I'll be collecting spatulas after I've found me a nice cabin with a working wood stove and then I'd use it for turning my food over. Sorry if that's too inside the box. If surviving is your goal in then dystopian future that is alluded too in this scenario, then spatulas would not be cluttering up my precious inventory space until I was otherwise "all set".

All bets are off though if the reason for our demise is we were invaded by the hamburger-head aliens from outer space.. in that case grab me that spatula pronto!