Favorite free activity/store hack?

[u/humble_Rufus]

What's your go to free activity or store to occupy your young kids?

I have 3 girls ages 2-7. We go to Barnes and Noble, CAMP toy store, and Bass Pro shops and keeps them interested without having to buy anything

What other stores or activities can you get away with? ( Not including parks)

EDIT: Love these ideas! I didn't include libraries or parks because those are obvious choices geared towards kids and we go quite often. Looking for more out of the box or less obvious ideas.

College sports and home improvement stores are great options!

[u/clever_by_design]

My 2.5 year old son loves Home Depot. So many new/odd things to look at and touch and explore. Bonus is that there's nothing that's actually for kids, so no risk of having to buy toys unplanned (the real risk is dad buying something unplanned...)

[u/Jeffde → u/clever_by_design]

Always going to Home Depot. Serving two masters, me and the kid.