Gardening is a great hobby if you have a yard. It may cost a little more upfront if you need to rent a tiller and invest in plants…but after that, just keep it weeded and you’ll have a very inexpensive hobby that produces a huge amount of vegetables for you to eat at the end of the season. I like planting a bunch of tomato plants then enjoying a huge flood of tomatoes at the end of the summer. I love to eat them fresh, use them in salads and make fresh pasta sauce. Delicious (and pretty inexpensive)!