Our group doesn't have too hard of a time. We're all Mid-twenties and we'll mix it up between Escape Rooms, Mini Golf, Glow Golf, Board Game Nights, DnD and just going out for Dinner (Korean BBQ, Sushi, Wings/Burgers/Fries after work Friday Nights). We also take advantage of when special events or festivals are in town (Tip: If you search "What to do in CITY this weekend" you'll get results). We've almost done movies a couple times, and i'm still pushing for Laser Tag.
Point being, there is a bunch of stuff to be had for cheap if you look around. Your group just has to act on them and not fall into the trap of not being able to do something because "its for kids".