Ensuring the quality of a custom-made snow globe starts with choosing a reputable manufacturer with a solid track record of delivering high-quality products. It's important to communicate your requirements clearly and ask for samples, if possible. Check details such as the clarity of the globe, the quality of the design inside, the functionality of any moving parts, and the durability of the print on the base. A well-made snow globe can reflect positively on your brand, so it's worth investing in quality.