LittleFe is a portable mini-cluster which is small enough to fit in a shipping case, light enough to easily move between classrooms, and travels as standard checked baggage to conferences and workshops. LittleFe's primary focus is turnkey classroom demonstrations of, and exercises in, High Performance Computing (HPC), parallel programming, and Computational/Data Enabled Science and Engineering (CDESE). LittleFe supports shared memory, distributed memory, and GPGPU parallelism. LittleFe's secondary focus is as a production HPC resource for small institutions that are not yet able to afford or support a full scale cluster; in fact, LittleFe can be used as a gateway to, and development platform for full scale HPC resources.