Cheap tripods typically use compatible quick-release plates. Search for "universal tripod quick release" on your favorite online shopping or auction site.

If the "universal" plate doesn't fit, you're unlikely to find one that's the right size. The tripods are too cheap for the manufacturers to sell custom-fitted plates separately. The scheme appears to be to get people to buy new tripods when the plate is lost or broken.

• You could try shaving off a bit to get it to fit. If you have a carving knife and know how to use it safely, that would be the way to go. Sanding is also an option, but keep a vacuum cleaner handy to avoid getting dust everywhere.

• You may be better off adding it to the growing collection of tripods with missing quick-release plates at your local thrift store. You may be able to find a sturdier tripod in their collection that will work with a "universal" plate.

Cheap tripods tend to be made of aluminum with additional struts across the legs. (See Is there any benefit in tripods that are braced around a center post?)