I have nothing on a physical workbench as of this moment, but on my mental and virtual (AutoCAD) workbenches I am working up the following ideas:
1) several custom lightsaber designs, both strictly Star Wars style and some crossover designs (including non-traditional hilt designs)
2) Star Wars blaster customs with light and sound
3) some different Sonic Screwdriver designs
4) some Trek prop modeling
5) Jaffa staff weapon with light and sound
6) Zatgun with light and sound
There are others, but many of them I want to be a surprise until I can determine the feasibility. Of course, I have to get a workshop set up first, so right now I'm just getting groundwork laid out until I buy a house. Apartments can be so finicky when it comes to workshops, and I want a good sized garage for metal working, painting, etc.
This is all meant for my (currently) fledgeling company Fiction Engineered.