No idea how old your kids are or what you're into but I'll give you a few..

Restaurants:

Higher end- uchi/uchiko for sushi, odd duck, barley swine, suerte

Midrange with clean ingredients- dai due, picnik, Thai fresh

Budget friendly- casa de luz, Veracruz tacos, juiceland

Diy/cooking yourself- local pastures, Mueller farmers market (Sunday), sunset valley FM (Saturday)(my wife sells raw milk there and accepts bitcoin)

Parks/playgrounds:

Alliance children's garden playground

Walnut creek- lots of hiking/biking as well as the playground

Mueller splashpad

Lady bird wildflower center

Town lake hike/bike trail

Barton springs/deep eddy for spring fed pools (deep eddy preferable with smaller kids)

Everything else:

Comedy mothership

Live music anywhere- Stubbs, continental club, Whitehorse, etc

Lots more that I can't think of

Have fun and enjoy our town!