Water bowl sizes?

I'm getting my ball in just over a week and am just purchasing the last of his stuff so I'm all set up before he gets here. He'll be 4 weeks old wen I get him, which of these sizes for a water bowl is more appropriate?

12 x 10 cm: 16.6 x 16.4 x 10.2 cm

11 cm: 12.4 x 12 x 12 cm

8 cm: 12.6 x 12.2 x 12 cm

Thanks.

I like to give mine the biggest bowl that fits in the enclosure. It helps keep humidity up so I don't have to spray as often.

Also get two because snakes poop in their water bowls. That way it's easy to exchange the soiled one for a clean one, and the soiled one goes in the dishwasher after you flush the contents down the toilet.

Thanks, I ended up buying the 8 cm: 12.6 x 12.2 x 12 cm (mostly because I plan on changing the water every 1-2 days and don't want to waste too much water with a bigger bowl), the bowl I got comes in packs of two which is good!

Waste water? Do you live on Dune? I'm sorry. Just messing with you. I could not help myself.

I live in the UK (probably the opposite of Dune), it rains pretty often so I could probably just give him rainwater haha. Honestly though, i was just trying to think of a good reason as to why I got the smaller bowl.