I recenlty found on eBay a "MUSIC 64" keyboard, with not many details, no warranty...I offered 10 euro to the seller and he agreed to sell it to me.
After some days I receined it, it was in pretty good shape and more imporant: it works!
I found some ROM images for its softwares (MONO64 and POLY64), here's a quick demo of the presets on the POLY64

You can edit various parametes of the synth enigne.

Upon request by a member of an Eurorack Facebook Group, here's a simple modification of the original Temps Utile Firmware, that adds another memory slot, bringing the available location for user presets to 5, but could be increased to any number apparently.
I haven't tested it thoroughly but it seems to work. 
DISCLAIMER: I take no responsibility for loss of important presets. use another Teensy if available, just in case...

Download it here

I have modded a Melotone Toy Drum, with very simple mods:

• External power supply (solder wires to battery terminals)
• Speaker On/off Switch (solder wires from switch to speaker)
• Audio Out (take signal directly from speaker)
• Trigger ins for Eurorack (simply connect a Jack to th epins of the IC, follow traces from pads to IC)

Here's the result, triggered by my Beatstep Pro:

I recently built a custom 3x2 stand for my Korg Volcas.
I had a look around on the Net, there are plenty of projects and templates, but none was right for my idea.

I took the template from a template file created by Oliver Dowie that can be downloaded HERE. The one he created is only 2x2 and has big wooden sides in order to keep the line of Volca inclinated.

I decide to go flat and modified his sides, keeping the Volcas flat with the surface they are laid on.
I cut 2 10cm x 58cm stripes of wood (the Volcas are +/- 19 cm. each) for the bottom pieces.
This way I can simply put the three volcas side by side and they fit quite well in the case, once it is screwed.

Read more: 3x2 Korg Volca DIY Stand