Foreword: I hope this hasn't been suggested before, accepting that it likely has, and also hoping that it hasn't been turned down outright on principle, accepting that it likely has been turned down due to unbalanced suggestions of usage. Without further adieu, here is my (hopefully) well thought out suggestion for a (hopefully) well balanced device.
Suggestion/idea: Liquid UU Duplication Device MK IIIXX
The idea of making something from nothing is a wonderful idea. And horrible for profits if it worked. But making more of something from something which is expensive, and obviously hard to get, but none the less obtainable, is a paradise for the market. One could make endless supplies of oil for the oil companies to shove down consumers throats while making a tidy profit. But such a idea is not easy to adapt to other things if all one can make is oil. You can make things from oil, but one can also make things from Iron, or Emeralds, or even Iridium. But how can one claim their stake in this field? With our brand new Liquid Universal Usage Matter Catalyzed Resource Duplication Device Mark Seventeen. But it's not all easy. It takes two of your desired resource to affix the binary state of the Liquid UUM into this non-standard form, and it takes 30 liters of this fluid to produce even one extra sample of your desired resource. But the ability to make anything from something you already have, is very tempting, and we have made this dream possible.
How you ask? We are not ready to release the blueprints for the DIY crowd, but depending on how our pitch goes to the Bigwigs, you may be able to set one up in your garage sometime soon. If not, I'm sure we will find a good use for this technology somewhere.