Thanks for the input.
Right, I'm really looking at ideas to build a business plan.
The locations are already open, but their only source of income is members' subscriptions (about 10-20€/year), and even though the locations are lent for free and rely on volunteers, they can only open a couple of afternoons a week and need more money to buy more equipment and open at least afternoons in the week and sat/sun.
Ideas I had to bring in money:
- Drinks/food
- Classes to learn how to repair a bike
- Repairs for those who don't want to tinker
- Sell Parts
- Organize events such as a travel documentaries