Try Chris at BPT. I'm sure he'll have ideas.
The first thing to do is figure out the voltage output and amperage of each wall wart. If you were lucky enough to have a bunch of 9 volt power supplies, a guitarist's pedal board power supply might be the ticket. Seems like most audio related wall warts are 12 volt though. Something like this can replace four power supplies:
The problem you have is the need for a plurality of various low power needs, some of which are AC, but some wall warts are DC as well, depending on the device and manufacturer. You may need to have all these electrically isolated from each other (to avoid ground loops in interconnected devices), which makes powering the devices from the same supply difficult. So, while you can re-package a bunch of seperate transformers into a single chassis, it won't really solve the problem. You can blame the manufacturers of these devices for this quandry, as designing with an outboard wall wart is cheaper than the old fashioned method of builing in a transformer in each product.
The shear number of voltage combnations and current/power requirements may make a universal, multiple output device impractical or unecessarily expensive, as you would have to design for the higher power requirements as a default.
So would another box with a plurality of AC outputs really solve your problem, replacing a AC voltage strip with another box?