There are a few ways to mount something without drilling. One way is to use adhesive hooks. Adhesive hooks come in a variety of sizes and can hold different amounts of weight, so be sure to choose the right size for your project. Another way is to use velcro strips. Velcro strips can also be found in various sizes and strengths, so again, be sure to choose the right size for your project. Finally, you can use Command strips. These are similar to adhesive hooks but are specifically designed not to damage walls or other surfaces.