Wow that certainly is stylish - much better than my Correx one! As for playpen toys - I don't have many either but I spontaneously put all kinds of things in it - a large floor cushion, a smaller cushion, the odd cuddly toy (although I need to wash them sometimes). The carrot cottage always goes down well out of cage as well (half an hour of banging and scratching inside it ripping hay off).
https://www.amazon.co.uk/Rosewood-Na...ottage+hamster
Cypher has some amazing playpen toys!