Carrying tools is essential when cycling. You can purchase dedicated bike toolkits, but you can save money by constructing your own. A plastic parmesan cheese container has two big advantages for this purpose: it's cheap and you can easily fit it into your water bottle holder.
Make zine's YouTube channel originally shared this tip from Make staffer Nick Normal. His kit includes a rag, crescent wrench, multitool, patch kit, LED flashlight, Allen keys, adhesive bandages and a few other items.
Bike Repair Kit [Make Zine via YouTube]