L.F.
Tea parties, playing at the park, coloring with chalk, watercolor, building forts or princess castles, running through sprinkler or wading pool, making creative art projects, having playdates with friends, going swimming etc. Good luck!
Can you set up a reward system for each day that they both do not fight, they get a prize or something at the end of the day? Money towards something special or ice cream on the weekend? It may help them stop fighting if they have a goal....
Molly