Actually, there is a very reasonably-priced option to obtain brand new laser galvos complete with the drivers, power supply and 1/8" stereo jack that can be used with the E350 Morphing Terrarium:
http://www.midwest-laser.com/html/computer_controlled_laser_show.htmlThe system sells for $199 in kit form, and $263 assembled. It is capable of up to 2 kHz, which is more than adequate for use in the "Mid" frequency setting of the MT, with room to mix in another quadrature signal for added complexity (a software control program is also included). These are compatible for use in the US and Europe. I have found the customer service to be both friendly and helpful. Be sure to mention "MOTM" in the comments section if you decide to order. Feel free to contact me off-list if you need any pointers for setting this up along with your E350 and other synth modules. I will also post information about sources for lasers in the future.
P.S. For the record, I referred to the Morphing Terrarium as the ∗silver∗ module, rather than the filter module - filters have very limited use for controlling lasers.
~Terry