For Little Explorers
For 2 to 5 years old
Sensory adventures for ages 2 to 5. Each week brings a brand-new world to discover, inviting toddlers to move, explore, and grow their motor skills, confidence, and social connections through hands-on play.
What’s Happening at the End of October
To allow our team to fully focus on finalizing construction, classes at our current location will officially wrap up at the end of October.
Winter 2026
Coming Soon
More room to play, explore and grow in Downtown Sunnyvale
Join the insider list. Opening date + special surprises for early supporters 🎁
Otto Family Club
Where Curiosity Comes to Play
Play today that builds tomorrow's problem-solvers, creators, entrepreneurs and confident learners.
Now Playing
Programs at Otto
One program runs today: Sensory & Messy Play. Seven more are brewing for the new location.
For Waddling & Tumbling Toddlers
For children under 3
A sensory experience designed for children under 3. Gentle, multi-textured play encourages curiosity, supports brain development, and nurtures early cognitive growth.
MembershipOne membership.
One membership.
Every kind of play.
Make Otto part of your family's everyday rhythm. Family General — 4 entries a month — or Family Unlimited, come whenever you like. Your price never goes up.
Founding membership — on sale nowFounding price
Family General
$220$185/mo
You save $35 every month
Founding price
Family Unlimited
$330$270/mo
You save $60 every month
Plus the $100 joining fee is waived · Lounge Pass $60
Loved by Families
"We were amazed. This is the first time she's playing it by herself. We are just standing back and observing."
Shilpa
Ishanvi's Mom
"When we first came to Otto, Kayla didn't even want to take off her socks. The team at Otto never pushed — they created such welcoming, intentional spaces that gave her the time she needed to watch, wonder, and eventually step in. Kayla's comfort and confidence grew here, and so did ours as a family."
Reyhan
Mom to a 2-year-old
"We did six sessions and every single one was a new kind of fun. Hailey got to play with mud, water, ice, paint — all kinds of textures and colors. One of our favorite moments was seeing her so brave during a little 'camping walk' — stepping over pebbles, branches, and grass like a tiny explorer."
Cathy
Mom to a 1-year-old
"We drove an hour from San Ramon to join — and it was totally worth it! The setup and activities were so creative and unique, unlike anything we've seen before. Our kids had a blast, and we as parents loved it too."
Shirin
Mom of Nova
"Each session feels so thoughtfully designed, with creative themes and beautifully prepared props. When we first started attending, he could only crawl. Now he is running around, and I feel like he has grown alongside the sessions."
Chuanxi
Mom of Likai
"This is our first time handing our daughter a knife… and she's doing quite good with it. We should trust her more."
Irene
Mom of Two
Building skills and community,
one sense at a time.
Join us as we develop a love of learning through play and exploration.
See Our Classes Calendar@ottofamilyclub
Creative play for 0–5yo · Nature-inspired, research-backed classes
