Social skills are a fundamental part of being able to function in society. To be able to negotiate social situations such as friendships, empathy, conflict resolution and resilience (to name a few) children need opportunities to practice in different settings, with familiar and unfamiliar peers. The skills and tools children gather during their early years will help equip them for later years.
Here are some useful websites to check out:
http://partnersincommunication.com.au/group-programs/
https://www.gateways.com.au/individual-support-recreation/school-age-community-participation-respite/school-age-recreation/a-ok-group-awesome-outings-for-kids
https://www.mackillop.org.au/ndis-social-inclusion-programs
https://www.leisurenetworks.org/disability-support/young-people
http://www.btach.com.au/drop-in/drop-in-youth-group