Make some old numerical progams (mainly in Algol) run again.
This directory will be populated with wonderfull programs, as soon as possible. Nowadays, you can just play with Bairstow/, an Algol 60 implementation of Bairstow's method ,to compute roots of (real) polynomials.
Both are very easy to install on any Linux machine.
Some verifications of numerical rsults are made using SageMath, so install it if you want to check correctness of some results. This is not mandatory!