If you watched the solar eclipse on April 8, you (hopefully) used a pair of eclipse glasses. You can always keep the glasses as a keepsake (or for the next solar eclipse in 2044) but if you’re not big on clutter, there are a few ways to give your glasses a second life.

Recycle them

Most eclipse glasses are made of cardboard, so the arms of the glasses can be recycled so long as the lenses are thrown out, reports TIME.

Donate them

The international organization Astronomers Without Borders is accepting eclipse glasses. The organization has partnered with Warby Parker and you can drop off glasses at Warby Parker locations across the county for donation. Warby Parker is accepting donations through the end of April, according to The Hill.

The organization Eclipse Glasses USA is taking glasses that do not have any scratches, punctures, tears, or other damage. The eclipse glasses will be sent to schools in Latin America so that children will be able to view the October 2024 eclipse.

You can ship your glasses to Eclipse Glasses USA, LLC, PO Box 50571, Provo, Utah 84605. The deadline to ship is Aug. 1.