Inventions on low budgets

When one can't put up a semi-inert reaction chamber because most suppliers overcharge and the country is in deep crisis then one has to invent ways to obtain the goals. A small stop to a Chinese store 'round the corner, a stop at the workshop, some DIY in the office, 2,40€ and a few hours later... chan chaaaaaaaaannnnnnn

P.S. It has been tested and seems to be working just fine ;)