Volunteering abroad through structured organizations (not informal arrangements) has a legitimate role in budget travel that differs from the WWOOF/Workaway model.

The structured options worth knowing:

Peace Corps (US) and VSO (UK): 2-year commitments, paid stipends, accommodation covered. Not compatible with travel — these are career moves, not travel supplements. But valuable to mention as context.

UNV (UN Volunteers): shorter terms available (3-12 months), accommodation often provided, small stipend. Competitive application, usually requires specific professional skills.

Habitat for Humanity Global Village: 1-3 week builds, you pay program fees ($1,500-3,000 covering accommodation, meals, construction materials). These are legitimate — the fee covers real program costs. You're paying for the experience and volunteering labor. Destinations globally.

Localwise (formerly: various regional programs): these often charge similar to Habitat and range from genuinely valuable to 'voluntourism' with minimal local impact. Research the specific program's actual community benefit, not just its marketing.

The ethical note: any 'volunteering' program that takes people without skills to do work local paid laborers could do is, at best, a learning experience for the volunteer and not a net benefit to the community. Short-term orphanage volunteering in particular has documented negative effects on child development. Be honest with yourself about whether you're there to help or to have an experience.