Yes, and cards

Pass out 2 colors of index cards (yellow, blue).
Everyone answers "what does it look like when X topic is present (positive goal) - 2 min writing.

Yellow team puts down cards. These people become the supporters. They will pair up with blue team members. Yellow card people's job is to be 'yes, and' supporters of whatever blue says. They make blue answers even better. Make your partner look brilliant. 1 min for the conversation. Switch partners (1 min) Switch partners (1 min)

Then switch so yellow team gets supported by blue team members. 

Variation
Cards travel separately from the people in the group (swap cards randomly)
Can combine with prioritization voting - see Thiagi 35 game