The main point of these activities is that you shouldn't have to have a facilitator at each group. You should be able to explain it to the whole group, and the smaller groups can run it themselves.
Chicken Stretching
Comfort Zone Wheelies
Comfort Spectrum
Birdie on a Perch
Knee Tag
Chiji Card Connection - if you have enough cards
Finding Nemo/Dory
Human Bingo
Icebreaker Wheelies
Identity Crisis
Six Degrees of Separation
Chiji Card Connection
Commonalities Mingle
Dinner Party
High Five (Touch) Someone Who
High Fives/Handshakes
Human Map
Question Swap
Alaskan Baseball
Back to Back
Birdie on a Perch
Bob the Weasel
Caterpillar Races
Cheer Rock
Evolution
Finding Nemo/Dory
Finger Fencing
Foxtails
High Five/Handshakes
Heel-Toe Tag
Jellyfish 1-2-3
Mingle, Mingle, Mingle
Monarch
Ships and Sailors
Question Swap
What if
Balloon Up
Chaos
City Perspectives
Competition Line-Up
Connectiles
Group Charades
Group Juggle
Ground Breaker
Helium Hoop
Human Knot
Make a Memory
Marble Luge
Picture Circles
Silent Line-Up
Turnstile
Have them debrief in small groups
Have them find a partner and talk through questions
Use debriefing props with partners or small groups