You can purchase lids for fish tanks in order to convert them into vivs. They come with a ventilation mesh and a socket for a bulb. Saw them in the pet shop today.
depends on what you're doing for a lid JS the mesh ones you can buy are expensive but have good ventilation (as they're mesh!) if it's a home-made lid then we'd need to see a piccy
cornsnakes, ratsnakes, bullsnakes, boas and day geckos
although just because it isn't air tight doesn't mean that it will necessarily have enough ventilation to maintain correct humidity. Maybe worth considering.