Some of the good places are 1. Ujjain
2. Omkareshwar temple
3. Patalpani falls
4. Narmada Ghat, Maheshwar
5. Some palaces are there at Madu
All these places are very good say for a single day or a 2 day trip.
Mohadi falls is one of the most underrated destination and very little poeple know about it. It is little difficult to get there but it is totally worth it. You can also try jam gate, tincha falls or ralamandal.
Mandu is also good getaway for one day u can plan from Indore. If you are planning a road trip, go to Mandu. The place is full of palaces with some scenic view