Side hustles are great - they don't require a lot of time, typically involve something you're already interested in, and can make A HUGE difference in your Mason Jar Vacation Challenge.
My wife and I both have side hustles. She teaches yoga, spinning, and group fitness. I teach skiing.
Each year, I earn about $800 by teaching ski lessons at Perfect North Slopes. It's not a ton of money, but in terms of the Mason Jar Vacation Challenge, it's plenty.
Of course, along with my side hustle, I get to ski for free and so does the rest of my family - saving us about a thousand dollars in season passes that we used to buy.
On balance, my side hustle gives us nearly $1,800 per year in free cash flow. That alone is more than enough to complete the challenge.
So, think about some things you like to do. Then noodle some ways you can turn your interests into a paying gig.
When you hustle, you'll be that much closer to your next epic adventure.