An international network of/for intelligent organisms
Slime molds tend to be pretty hardy.
Any container, as long as it maintains a humid and low-light environment should be fine. I use random plastic containers and they are more than happy to live in them. I like to grow them on moist paper towels but they will climb over plastic if forced to.
It's generally pretty hard to get them to go dormant even if you are trying so I wouldn't worry too much about that but if it does go dormant, add food and water and it will become active (in fact, they are generally shipped to you in a dormant stage and the instructions will generally be to just add water.
I don't know how well slime molds do in terms of a display (I'm just using them for research right now) but I'm sure they would eat dead insects.
I wouldn't spend 50 dollars on them though... one 15 dollar pack will be more than enough as they spread incredibly quickly and if they shrivel up and die, call customer service and i'm sure they would be more than happy to replace it. Or see if Ian comes online :)
Yep you can have slime for nothing and I even supply a daylight proof version
I bet the crickets would try eating it, there are a few beetle species that will snack on them. It'd form spores with the terrarium lights on unless you had a light proof version ;)