sals new house + enrichment for snails?

salvatore is happy so im happy! I got a 7L box from the poundshop and poked a bunch of holes in the top with a hot needle. I made sure to heat the sides of the melted holes so its soft and wont hurt sal when he climbs on the lid. I also made sure to clean the box really well.

I added two inches of wet coconut substrate! im going to cover his coconut and food bowl in some sphagnum moss so that way if they ever fall on it it wont break her shell.

what other things do you think i should put in? i know i should put something soft and safe in so thats top priority! but i would also like it if he had something to climb on. I feel dreadful leaving her all alone all day with nothing intresting going on. im worried that she'd get bored!

every evening i let her go on her playground for at least two hours and in the morning (pics of it towards the end) and i let her wander around in the garden in a controlled area for an hour. i supervise him the whole time to make sure that she doesn't get hurt.

but what else could possibly be enriching for a snail? salvatore is my pride and joy and i love him very very much, so its very important to me that they have the best life possible!

thank you for all your help!