Nursery Ideas

I'm 37 weeks now and I'm thinking of different nursery themes. 

We're having a little boy, everything we have bought so far (toys, bouncers, floor gym etc) have all been quite bright and more jungley than anything else. 

We have a cream cot bumper with bears on, and we also have a jungle one from my mother. 

His room at the minute is cream embossed wallpaper and cream carpet with brown flecks through it. We don't really want to change the wall colour or carpet. We're thinking of like a wall sticker or something but are absolutely clueless of what to do? Or where to go to get things to decorate it at a reasonable price

any ideas?

thanks