I have seen three different activities at 'Ohana. The main one that I have seen all three times involves a coconut race where the kids are given small brooms with whispy straw to push coconuts around the walkway between the tables. I saw one parent assisting a very small child with this.
One time they had some of the kids lined up with their parents and were doing minor calistetics and embarsesing the adults.
The third activitie involved giving the kids small musical instraments ( kazoos and castinets and maracas) and the foolowed a woman around the room who was playing a ukelele and singing Zip a Dee do Da!!!
I think with parental assistance the small one might be able to be involved.