Halfords Gazebo Weights:
Contains: 2 gazebo weights
Weights can be filled with water
Multiple Velcro straps so they can be secured safely.
Seems fab for the price, please keep in mind they are in the sale and stock is limited, & no before you ask, I haven't checked all stores. Free click and collect. Reviews seem good. Ideal if you don't fancy drilling holes or whatnot in your paving.