I'd say the research the sculpty clay idea. Might be your best option. Keep informed on how it works out. I'm interested in options for making ones own decor.
It will be awhile. For out of work now. I still buy a few fish, etc. Can't seem to stop spending on this hobby. Don't want to start the project with the sculpty clay for it is hard to estimate how much I would need to buy and once I get started I don't want to stop.