There have been a few people from this forum who have made their own hamster toys and have posted their projects. I think they're all wonderful and quite inspiring. Some are excellent for a Syrian.
Pravandi's thread:
Pravandi's Decoration Housing
Wofunny also made a few toys out of Jenga blocks! You can search Wofunny and Jenga and I'm sure it'll come up.
You can look at this website:
Naturnahe Hamstergehege
She also made a huge hamster cage herself out of Expedit furniture which is interesting to look at. You can get some ideas from there. Wofunny also made an Expedit cage and you can find pictures of that on here. So did Nappo.
And finally a link to a German forum courtesy of Nappo which I saved and occasionally haunt:
Hamsterboard.de | Eigenbauten