How do you keep a kilim rug in place?

How do you ensure that a kilim rug stays securely in place, preventing it from slipping or bunching up on the floor? Is there a specific method or technique that you recommend for keeping the rug firmly anchored, whether it's placed on a hardwood floor, carpet, or another type of surface? Do you have any tips for choosing the right rug pad or underlayment to enhance the stability and lifespan of the kilim rug?