Glue for plastic...

I was wondering, is there a good glue for plastic? I gave up on the idea of making a TF out of metal (I since learned that that idea is TOO ambitious and would only lead to extreme frustration) so I figure, why not it be made out of plastic? Plastic is easy to find and use, and I can create to my artistic heart's content and my own natural tendancy towards obsessive interest.
I have done simpler projects when I was younger, and I want to do this kind of thing again. But what I want to try now will be more advanced.
I have done simpler projects when I was younger, and I want to do this kind of thing again. But what I want to try now will be more advanced.