The easiest yes on this list for younger children: sort clothing, books and toys for local kids in need. The Giving Factory welcomes volunteers from age 5 with an adult alongside.

Cradles to Crayons runs its warehouse, the Giving Factory, as a volunteer floor: donated clothing, books and toys come in, and volunteers sort and pack them into personalised packages for local children who need them. The work is visual, physical and immediately legible to a child — you can see the pile you sorted.
It is one of the very few Greater Boston sites that takes volunteers from age 5, as long as a grown-up is working alongside. That makes it the usual first stop for families who want their kids to do real volunteering rather than a donation drop-off. Check the current shift calendar and the age policy on their site before you book, since both change by season.
The Giving Factory welcomes volunteers from age 5 and up, with an adult volunteering alongside them.
Volunteers sort donated clothing, books and toys for local children in need — checking quality, grouping items and packing them into personalised packages.
The Greater Boston Giving Factory is in Brighton, MA. Book a shift through cradlestocrayons.org, which lists the current times and age requirements.
More ways to help: all kids’ volunteering in Greater Boston · Boston kids’ activities.