Make things to sell
Some people are very creative and their hobby could involve making things. Whether this is art or craft, writing or other things it can be possible to sell things that you have done so that you can make some extra money. It can sometimes be hard to part with things that you have spent a lot of time working on, but it could be possible to make copies that you can sell. It is not always possible to make back all of the money that you have spent in time on making items, but if you have enjoyed doing it, then you may not mind if you do not make a good ‘wage’ but if you get back more than it cost in materials, you can use the money to buy more so that you can make some more things.
Assign a budget
Although this will not actually make money, it will help you to plan your spending better. Make sure that you know how much money you have each month coming in and how much you have to spend on necessities such as food, travel and bills. You will then know how much you will have left to be able to spend on your hobby. This will allow you to be able to spend money without having to worry about whether you can really afford to.
Swap or sell resources
If you have some resources that you will no longer use, then it could be possible to sell them or perhaps to swap them with other people who have things that you want. You may not get back the money that you spent originally, but if they are items that you know that you will not use, you will be able to allow someone else to get use out of them and you will be able to make some of the money back that you can spend on things that you want. This will not only help you to afford more items, but will mean that you have the space to put them as you will have made some room from getting rid of some things.
If you are very good at your hobby it could be possible for you to teach others. You could set up a class and charge others to take part or you could put some videos online teaching others how to learn certain techniques. Even the most basic tutorials could be really useful for beginners and it could start to earn you an income. You could also consider writing a book to guide people on how to do things. You could sell this as an ebook which you self-publish and it could be completely free to set up and you get all of the royalties or you could contact publishers to see whether they are interested.