If you are looking to make a lot of money, I believe that ship has sailed. If you are looking to just learn and play with the technology, then a small USB powered ASIC and a Raspberry Pi running Minepeon would most likely get you going. It is fun to play with the mining hardware and get it all working. It really depends what your budget is for this project. Just don't expect to make much BTC if at all. Maybe some others can send links to some products that might fit your need, I have not researched it for many months.