Trying to Keep Kids Entertained Without Breaking the Bank

Lately, keeping my two little ones busy without spending a fortune has been a real challenge. Between school holidays and weekends, they get restless fast, and I want to avoid the usual screen time trap. I've tried local parks and free library events, which help, but some days it's just not enough. I’ve also started a little garden project with them, which is fun and teaches patience, but it doesn’t fill every idle moment. I’m curious if others have found creative, low-cost activities that really engage kids and maybe even sneak in some learning or outdoor time? Would love to hear what’s worked for you - especially ideas that don’t require a ton of prep or fancy supplies. How do you keep things fresh and fun on a tight budget?