Indy has a lot of fun summer events, one of the best being the concerts on the canal. They’re free and open to anyone, all you have to do is find a seat along the canal within earshot and you’re all set. The Historical Society provides the entertainment (FREE), as well as hiring some barbecue makers and some yummy food trucks, although those aren’t free (I WISH).
We met my aunts there for a picnic. The canal is one of the most beautiful places in Indy, I especially LOVE the art all around the whole place. You can also rent paddleboats and kayaks for a fun afternoon.
One of the aforementioned food trucks was a yummy cupcake truck. I had red velvet, in sticking to my usual.
I would highly recommend the canal concerts, they make for a great evening and you can easily do it on the cheap.