MIDIBox.org has announced sammichSID, designed to be a “no excuses” MIDIbox SID synthesizer kit that’s cheap, easy to build and powerful.

sammichSID has the following design constraints/features:

• cheap
• small
• DIY newbie friendly
• minimal control surface
• single “walwart”/AC adapter supply, no C64 PSU brick!
• stereo SID, optimized for 8580/6582A, 6581 optionally supported
• “sandwich-style” stacked PCB design, no wires!
• laser-cut 3mm acrylic case by Ponoko, customization possible
• industry standard 2×20 character LCD with low-power LED backlight, customization possible
• common control surface parts used, customization possible
• To be available as a complete kit, including PCBs, components, case, hardware and (optionally) two 6582A SIDs!

MIDIbox SID Synthesizer V2 features:

• One Core module and one stereo SID module, fully integrated on one PCB with power supply.
• Five “BankStick” slots, so you can store 4 banks of 128 patches, plus 128 “Ensembles” (engine and patch configurations)
• Jumpers to configure the power supply, allowing a regulated 12V input to power 6581, or unregulated AC/DC input to power 8580/6582A.
• Minimal control surface with three user-customizable buttons and LED matrix for maximum bling.
• 2×20 character LCD with support for low-power (25mA) or high-power (250mA) LED backlight.
• Potential for future upgrade to MIDIbox SID Synthesizer V3 using add-on board

More details on this Wiki page, discussions in this forum article.