Ballgame is fun, though the weather this week is going to suck. Studebaker museum is ok if you are into cars and such and have time during the day. If you want to listen to music Chicory cafe sometimes has bands playing during the week. Kind of hippie place , but everyone is cool.
Be aware downtown does have a large homeless population.
If you like craft beers check out South Bend Brew Werks and the Crooked Ewe. I highly recommend the Ewe and getting the smoked brisket , its awesome. Other good places to eat not on Grape road.
Cafe Navarre
Lasalle Grill - They have a bar on the 3rd floor also.
Woochi for sushi and such
Frankies ribs down on washington is very good , but it is in the bad hood. Not horrible , but not great.
Indoor shooting Range on south side of town called Kodiac , I think its $12 an hour?