Try looking at fanfictions, artwork, listening to music, etc. Trust me, whenever I feel that I'm losing interest in the show (which is hardly ever, I have to admit), I always just look at all of the great things that the community has churned out, and I'm interested again.
The brony fandom is probably the best fandom I've been in. Way better than the DBZ fandom, where everyone is at each other's throats arguing about power levels, dubs, etc.