A Tool ...

... for every job.  This is a Leatherman Wave - a 17 feature Multi-tool.  The best tool I every bought.  I bought it around 1980 and often kept it in my car (in case of emergency etc) BUT in 1988 whilst it was still legal to own it, it was deemed illegal to carry it with you.  It now resides safely in my 'tool drawer' at home and is still the 'go to' tool for many small jobs - but it is now housebound......