So it looks like Slinky is about to shed for the first time (with me anyway) and I need some advice! I know I need to bump up the humidity.. 60-70% right?

First, my aquarium has a locking lid with a mesh screen that probably needs to be covered. What could I cover it with to keep moisture and heat in?

And... do you think it might be a good idea to put a covered bowl for him to soak in? If so maybe an example (like a shallow cool whip bowl or something?) He hasn't been in his water dish but I was just trying to think ahead. :-)

Thanks in advance!