Personally, I make sure that all of my tubs have lids so that if we have to evac, I can just take the snake, tub and all, with me. I also keep extra heating mats and have 4 hydrofarms that could be quickly taken with me. There is also a converter in my car so that if needed, I can hook up a temporary system in there for them. That would be in the event of a long evac. For short term, I have small tubs for all the corns and bags for the balls. Anything longer than 24 hours though, and their whole system will go with us. Eggs could be done similarly though with my corn eggs, I've never thought about it too deeply.

You might also want to see how long it would take you to actually evac your animals. In many instances, you aren't given much notice and if the winds were to change with the fires, you may only have a few minutes to an hour to get out. Keep everything near each animal that you would need to evac them that way, if something happens, you don't have to look for it.