With an eye towards doing volunteer work that could help get paid employment, eventually...
Most of the voluntary positions I can find that are remotely appealing require me to spend a minimum £7 (motoring costs). More if I have to pay for parking, less (£5) if I could use the train instead (depends on timing, though). To get, say, 20 volunteering sessions under my belt, what should I be prepared to invest? What is reasonable? And if 20 sessions isn't enough, how many sessions at £7 should I budget for?