Absolutely! One of the great things about making your own salad dressings is that you have the flexibility to customize them to your taste or work with what you have available. If you don't have olive oil, you can use another type of oil like canola or avocado oil. If you're missing a specific vinegar, try substituting it with lemon juice or another type of vinegar you have on hand. Don't be afraid to get creative and experiment!