When you’re on a tight budget, it can be difficult to decide what to spend your hard-earned cash on. Do you splurge on the fun stuff? Be responsible and renovate? There’s no one answer that’s right for everyone. But, reading what’s been worth the investment to other people might help you figure out what’s most important to you. Below, eight people (who know a thing or two about making a home) share the investments that had the biggest impact on their happiness at home.