If you want to do something useful with your eclipse glasses, there's a group called Astronomers Without Borders. And you can donate them to schools in South America and Asia for kids to use during eclipses in 2019. We won't have another one here in the U.S. until 2024.
If you really can’t wait to get rid of your super-specs, you can send them to Astronomers Without Borders’ corporate sponsor, Explore Scientific, based at 621 Madison Street, Springdale, Arkansas.
Photo courtesy of gizmodo.com