my syrian has the eco-green habitat (medium, wish id got the large) I bought a cut to measure perspex sheet to line the enclosure so its easier to cleanl;
fill with 10 inches of substrate ( i use natural paper bedding carefresh or kaytee)
also has a tunnel system under half the bedding (rodipet ) and a ceramic tunnel system over the top(again rodipet)
plus a glass cookie jar sand bath,
a climbing frame,
a huge wooden silent running wheel (saves our sanity)
and a rummage house filled with hay where i hide treats- then lots of chew toys, different textures,
and a couple of hanging treat/toys
put in some natural grasses/sprays eg flax and millet for browsing
i shred a few sheets of plain white loo roll and leave it outside his house- he uses it to make his nest
previous syrian used a little ceramic loo, with critta-litta ,current incumbent doesnt like it and uses one corner for the loo, so its still easy to spot clean
he has 'floor time' every day, sometimes in a play pen with different toys, and has a plastic tub 'holiday home' for when his main one gets cleaned (it takes me around 4 hours) or if we're going away
cardboard boxes- any size, with a few entry/exit holes cut in make a great toy, hide a couple of treats inside and put a couple of boxes in his play area, he'll get a half-hour of fun.( i use the hallway for this because its nicely contained and he cant escape, but gets a bigger space to run around and play in his boxes
rodipet (im just a customer not an agent honestly) have some great hamster things, and a few videos that show how their things provide your hammy with opportunities to express natural behaviour
hamstercentral and hamster hideout have loads of good advice and product recommendations
i've been told male syrians are the most chilled out and females more bitey- ive had one female and one male- both have been pretty sweet natured, the female more shy.