Welcome to the board - both of you guys.

Opinions vary regarding freezing cigars. It is sometimes used to kill tobacco beetles and/or their eggs. I've never done it but hear that it is a controlled process that should be done correctly to avoid ruining the cigars.

Refrigerators are designed to dehydrate (except for the hydrator drawers - and you would have little, if any control over rh in these) and cigars should never be stored in one.

You could put 50 cigars in a tupperware container about the size to just accommodate that many and there would probably be enough humidity in that many together to be ok for a few days. You could also buy a Water Pillow for less than a buck and the cigars would be ok for a month or more. You should go ahead and get some because it could take longer than a week to get the humi ready and they are nice to have on hand anyway and can be found at your B&M or online.

I dunno about a shot glass - it might work ok, but I wouldn't risk over-humidifying or just flat knocking the glass over and soaking the bottom layer.

Orange peels? Nope. Flavor issues.

Again, welcome to you both, it would be cool if you could post an intro and tell us a little about yourselves, and remember: the search function is badass.