One of the plants say to place in a bag for eight weeks with 1tsp water and germination material. What is the germination material?
It sounds like bulb(s) or seed they require cooling. Just fill the bag about half to three quarters full of potting soil or top soil. You could use vermiculite but it sounds as if your just starting so you probably haven't required the need for that yet. Perlight is more commonly used as a rooting medium than a seed germination bed. When you get the selected medium fill the bag up half way or more. make a depression in the middle with your measuring spoon. Fill the depression with the 1tsp of water. Try to keep the bag dry so it won't tear. Shake the mix up. Put in the bulb(s) or seed(s) pressing them in the mix so just about a third is exposed. Leave them for the duration of time in the cool part of the fridge.
There are a number of different types of germination materials. Germination material could be vermiculite, perlite, sand, a sterile seed starting mix, even water can be a growing medium for some seeds. If it's a carnivorous collection, you could use sphagnum peat, too. Didn't they provide you with a growing medium when you bought the collection?
