[header] How to make a first aid kit for your cat [title] Purchase a first aid kit container to store the materials in. [step] The container should be airtight, waterproof, and sunlight proof so the effectiveness of the materials inside aren't affected. Sunlight can cause iodine and some medicines to lose potency. 
Heat can cause plastic gloves to become brittle. [substeps] You can purchase first aid kits for cats at a veterinary store or in a pet store already assembled.