On your other thread I mentioned a few of the basics - suitable cage / wheel / bedding / food
My Syrian's other favourites are
- chews - there are two brands which are hamster safe but marketed for dogs. She prefers Greenies but gets through them so quickly it's no longer healthy, so she only gets one very occasionally and for a limited period of time now. The other is Whimzees - much harder and better at wearing down teeth. She likes them, and they do last a lot longer!
- bendy bridge - bit of a classic, but they can be chewed (if your hamster likes wood - many don't), walked under and climbed on
Wicker Bridge for Small Pets at zooplus (other retailers are available!)
- sandbox - she loves to dig in it. You'd be wise to put it on a shelf (keeps other bedding out) and have high sides on the edges that are near the cage bars to avoid mess and wastage. Avoid anything labelled chinchilla dust; this is meant to be good
Supreme Science Bathing Sand 1.5L on Sale | Free UK Delivery
- Trixie digging tower - we originally bought it thinking that she'd use it for digging in. Instead, she has moved in to sleep in it full time, but she clearly loves it. We had to slide the bottom out after she peed on it, and as she ignored the ladder that is now used elsewhere in her cage, but it was clearly a hit
https://www.amazon.co.uk/Trixie-Larg.../dp/B000RZHQGE
- hazelnuts in shells - when offered one she'll carry it about in her mouth (too big for pouching) and carry it about like she has just won a prize. She then spends hours trying to get into it - we have several little shells covered in hamster toothmarks where she has eventually managed to get through the top and eek the nut out!