i moved 30 snakes, 75+ geckos, my rat breeding colony, fish and a cat a few months ago. fun!

just make certain that whatever you contain the snakes in is secure. i bagged all my snakes in pillow cases and knotted the ends and then put the bagged snakes into rubbermaid containers (several bags per container). somehow one of the snakes got out of its pillow case (i'm still really not sure how she managed it) but luckily was kept contained by the rubbermaid.

the geckos can go into deli cups or any kind of container that size with holes poked/melted/drilled into them for air as judy mentioned. if you get a big enough styro cooler they can go in with the snakes to stay warm.

for the aquarium, save several jugs of the water that is in it now to start with when you set it back up--this will help it cycle faster. transport plants in wet newspaper and bag fish in aquarium water in ziploc bags--since it is such a short trip they'll be fine this way. i set my fish up in a temporary large rubbermaid with their old aquarium water and an air stone while i got their tank set back up. gave the tank 48 hours to cycle and put the fish back in.

good luck!