Cambridge E-Bike lending Library - https://camberville.ebikelibrary.org/

Cargo Bikes of Camberville a super useful resource: https://www.facebook.com/groups/1029543797114243

Bike buses are groups of families who cycle together to school.   See https://www.bikebus.boston/  to find active bike busses or resources on how to start one.

Other organizers of bike rides which you may enjoy:

Bike to the Sea: https://biketothesea.org/

Cyclopolitan: https://linktr.ee/cyclopolitan

Somerville Illuminations Tour: https://somervilleartscouncil.org/illuminationstour

Belmont Family Cycling https://www.facebook.com/groups/271941052151557

Here are some links to organizations you could get involved with if you are interested in improving bicycle infrastructure and safety or promoting bicycling:

Massbike: https://www.massbike.org/

Arlington

Arlington Bicycle Advisory Committee: https://www.arlingtonma.gov/town-governance/boards-and-committees/bicycle-advisory-committee-abac 

Everywhere Arlington Liveable Streets: https://www.facebook.com/profile.php?id=100064862975352

Belmont

Friends of Belmont Community Path: https://www.facebook.com/belmontcommunitypath/

Boston and Greater Boston

Boston Cyclists Union: https://bostoncyclistsunion.org/ 

LivableStreets Alliance: https://www.livablestreets.info/ 

Cambridge

Cambridge Bicycle Safety: https://www.cambridgebikesafety.org/

Friends of the Grand Junction Path: https://www.facebook.com/GrandJunctionPath/

Memorial Drive Alliance: https://www.memorialdrivealliance.org/

Cambridge Bike Give Back: https://www.cambridgebikegiveback.org/

Malden/Everett/Revere etc

Bike to the Sea: https://biketothesea.org/

Lexington

Friends of Lexington Bikeways: https://www.bike-lexington.org/

Medford

Medford Bicycle Advisory Commission:   http://www.medfordbikes.org/

Walk Medford: https://www.walkmedford.org/

Somerville

Somerville Alliance for Safe Streets:   https://www.sass-somerville.org/

Somerville Bike Committee:  http://www.somervillebikes.org/

Somerville Bicycle Safety:  https://somervillebikesafety.org/

Friends of the Community Path:  http://pathfriends.org/

STEP: https://www.somervillestep.org/

Watertown

Watertown Bicycle and Pedestrian Committee: https://www.watertown-ma.gov/237/Bicycle-Pedestrian-Committee