Finn's Frog Farm Deluxe Isopod and Millipede Substrate with Calcium - (1 Gallon), Brown

you can find everything on amazon if you have the budget to :) remember, dont put anything you get outside into their enclosure unless you’ve properly sanitized everything!! theres a couple tutorials on how to sanitize leaf litter if you need to, but i lowk just get everything online. you can also DIY substrate but you need flake soil/rotting wood to do that. if you dont mind aesthetics, i find that plastic food containers/tuppaware with holes poked into them work lol. you can drill holes/solder them in. cubaris species (ex your rubber duckies) need a lot of airflow AND humidity! i poke holes on all sides of my containers and some on top, along with making sure their substrate and moist side is wet enough.if you are using cuttlebone, make sure to break it into smaller pieces lol. here are some supplies ive personally used from amazon:leaf litter—https://a.co/d/0cYsKa0qsubstrate—https://a.co/d/0fcuCyQF & https://a.co/d/02Pktuup

There is space so it's not directly against the shelf. https://www.amazon.com/dp/B0CZY2RY5L?ref=ppx_yo2ov_dt_b_fed_asin_title This is my substrate.