Would it be ok to splice wires and tie (for example) two lazer LED or LED cannons together so they feed off one molex? Trying to cut down on wires and molex connectors. Wouldnt try it with anything larger than those 2 dollar lazer lights.

Or better yet... is there any type of cheap inverter, controller, etc that would allow me to connect maybe half a dozen fans, lights, etc to it that DOESN'T stick in a 5.25 bay? Something internal... be even better if I could have a control panel for a pci slot. The drive covers are stealthed and I don't want a clashing fan controller making an eye sore of itself on my front panel.

It depends on how much voltage the things need....give me some more info on them, such as the connectors used, voltage needed, etc.

As long as you dont connect something needing an inverter, i'd suggest you try to build one of those fan connectors made with a project box and some speaker plugs, i made one and hooked fans leds etc to it and powered it with 1 molex
Worked great but i took it out, my modding skills weren't that much at the time and it didn't look good
There's a couple of how to's somewhere, i'm sure someone will find what i'm talking about

I dont do wiring, I wish i knew hoiw to since it makes things a whole lot cheaper...ah well