What the Fluff? Festival 2026

Legally Fluff: A Toast to Union Square The 21st Annual Fluff Festival returns to Union Square on Saturday, September 19, 2026 from 1-5pm (severe weather date Sunday, September 20). This year's theme, "Legally Fluff: A Toast to Union Square," celebrates 21 years of Somerville's invention of Marshmallow Fluff with live music, sticky games, and citywide innovation. The festival's commemorative 2026 design comes from Fluff aficionado Jen Gubicza (@zooguu), featuring fluffalicious toasts of all kinds. Presented by Union Square Main Streets and the Somerville Arts Council, the free, family-friendly event draws Fluff enthusiasts from Greater Boston and beyond. Union Square Station on the MBTA Green Line drops off near the East Entrance. Full lineup comming soon!

Union Square Plaza

Manda

Sophia 

Maya

Annie

Kanako

Michele

Sabrina

S22: conversations

Wondering what to do in Boston? Places to eat? Free activities? Good for a group? Date night spot? Girls night out? The best things to do? Ask Joyraft!

Best places to go in Boston? Things to do? Places to eat?

Questions & answers about things to do in Boston

Recs 💬

Community recs 💬

S4: top picks

The most fun, cool and unique things to do in Boston. Can’t miss events, shows and experiences. Concerts, restaurants, bars, free things in Boston and beyond.

The most fun and cool events happening around Boston

Hot and new things to do in Boston

Hot & new

Hot & new 🔥

S11: happening this weekend

What to do in Boston this weekend? From festivals, concerts, performances, free events, screenings and more, Joyraft has the best things to do in Boston.

25+ things to do in Boston/Cambridge/Somerville this weekend

Things to do in Boston this weekend

This wknd

This weekend for you

S21: roundups

Our top picks: outdoor dining, free events, spring festivals, best bars, upcoming concerts, museum parties - the latest in and around Boston.  Slug: joyraft-top-picks-best-things-to-do-boston-ma

Top picks of the best things to do in and around Boston

Joyraft picks: Boston’s best things to do

Roundups ⭐️

Curated by Joyraft ⭐️

S28: calendar experiences

This week in Boston

This week in Boston 📆

This week 📆

S20: c+d experiences

Discover new, unique events and experiences happening in and around Boston. Perfect for date night, good for a group or with a friend. Be the first to know.

The newest events happening in and around Boston

The newest events on Joyraft

Just added

Just added to Joyraft

S16: editor picks

The most unique and can’t miss things coming up in Boston / Cambridge / Somerville and beyond. Festivals, food, drinks, fairs, concerts, art and free activities.

Unique and Can’t Miss Things to Do in Boston

Can’t-miss things to do in Boston 🚨

Can't-miss things to do 🚨

S2 (A): top experiences

The most popular things to do on Joyraft. Concerts, restaurants, bars, events, parties, openings, kid friendly, date ideas, free things in Boston and beyond.

Top 20 things to do in Boston

Top 20: Joyraft’s most popular

Top 20

Top 20 on Joyraft

S3 (A): trending experiences

Discover can’t miss events and things to do in Boston. The most fun, unique and cool events coming to the Boston area this spring and summer.

The hottest events happening in Boston

Trending events on Joyraft

Trending 📈

S19: interest based

Kid-friendly events in Boston

S18: interest based

Where to eat and drink in Boston? Joyraft has Boston’s newest bars, restaurants and specials. Drinks and pre fixe dinner menus. Cambridge & Somerville too.

Boston Bars and Restaurants: Events and Openings

Food & drink experiences in Boston

Food & drink experiences 

Where

What the Fluff? Festival 2026

Website

Where?