My horse is getting bored?

so i have weekly lessons and we do some dressage and some jumping and my horse & i both love it! but i ride 5 other days a week and all i do is wtc in the ring and i think my horse is getting bored of it.. i cant take out poles or jumps & we cant ride in the field cause they're building an indoor.. any ideas?? we dont have access to trails either.. thankyou!