2hp have announced a portable 42HP Eurorack case called Lunchbox, which will be available standalone, with power, or stuffed with modules. Pricing hasn't been placed on their website, but rumor has it the standalone will be only around $50!
Image Credit: 2hp
If you aren't familiar with 2hp they make Eurorack modules (a type of synthesizer format) sized to be only 2hp wide (in Euroroack the size of a module is determined by horizontal pitch or HP). While they aren't the only company in the world making portable Eurorack cases, they have a unique spin on it that is at a nice price point. Its literally a lunchbox with rails inside, so you can close it to take your modular rig to go.
If you utilize 2hp's Eurorack modules, which are very good and very affordable, you'll be able to build quite a powerful synth inside this tiny footprint. It will be available in four powerful systems packed in the new Lunchbox case: Picnic Basket, Synth Voice, Drum Machine, and Effects Box.
Estimated release date is March 2020.