Question about marble salamander setup

[XDragonGrlX]

Just curious what everyone uses for substrate and where ypu get your leaves for leaf litter? I'm using coco fiber right now but wanna make her tank a more natural setting

 

[Bellabelloo]

My group have a mix of coco fibre and regular soil. The soil is from my garden and is chemical free. They have some flat stones and some small branches flat on the ground. I have recently added a pile of oak and beech leaves. Since I have added these the opacum have become much more active. I think it is because they feel more secure knowing they can hide and lurk under the leaves. The worms and woodlice are also more likely to tuck them selves away amongst the leaf litter rather than try to escape through the lid and the opacum have better access to food.