Not recently but hitchhiked, camped and slept rough around Europe for a few months in my younger days.
Managed France, Germany, Austria, Switzerland, Lichtenstein, Italy, Denmark and Belgium.
Very brief stay in the then Yugoslavia as my paperwork was wrong (bloody British Embassy in Paris) so was deported; arrested for (I think – Italian very poor) vagrancy while visiting Pisa but released without charge and got off with a lass in Venice who actually only lived 4 miles from me back home.
Not one night indoors for the whole trip, used to wander out into woods on the outskirts of towns to camp or hide at the back of the massive railway goods yards that seem to exist in many European cities/towns.
Not long after, I got married and had kids, they are getting older now and my wanderlust is returning. This summer we are taking nearly a month off and taking the van, tent and kids around the Alps.