Hello and welcome to HC!
All Syrians are really so different when it comes to what toys they'll like. Of all the Syrians I've had, each have liked different things so it will really depend upon their personality as an individual!
For example- my little Chance LOVED wooden chews so I'd buy him a huge variety of those
MY Duncan loves straw huts, bundles, and balls so whenever I see things that are made of grass/straw, I'll pick it up for him
My one hamster spider never liked any toys to be honest! Instead, I offered her very deep bedding to enjoy and she was perfectly satisfied with that
I always recommend offering a large variety of toys until you can narrow it down to what they like best
Some things to try:
-cork tunnels
-Timothy tunnels
-bamboo, cholla, and loofah tunnels
-grapevine for climbing
-Popsicle/lolli stick platforms
-and lots of bendy bridges!
Good luck with finding some fun toys with your Syrians, I'll link some of my favorite toys below
If you ever have any questions, please ask!
https://www.amazon.com/gp/aw/d/B01KA...AkL&ref=plSrch
https://www.amazon.com/gp/aw/d/B001L...cyL&ref=plSrch
https://www.amazon.com/gp/aw/d/B002X...Q1L&ref=plSrch
https://www.amazon.com/gp/aw/d/B003T...cJL&ref=plSrch