If you don't think you'll move, buy a house outright. If you do, invest in a Vanguard or similar 'safe' investment account (see a professional).
Depends on housing prices where you live I suppose, here 85k landed me a quaint 1200 sq ft 3 bed / 1 bath place in suburbia. Not the best house, but one I'd be ok dying in.
Honestly being young, talk with a professional and see where would be safe and yet flexible if you need it later.