There are many things you can do with old sheets instead of throwing them away. Here are some ideas:

1. Turn them into reusable bags: You can use old sheets to make reusable grocery bags or tote bags.
2. Donate them: If your sheets are still in good condition, you can donate them to a local charity or homeless shelter.
3. Use them for cleaning: Cut up old sheets into rags for cleaning around the house.
4. Protect your garden: Use old sheets to cover plants and protect them from frost or pests.
5. Make cloth napkins: Cut old sheets into squares and hem the edges to make reusable cloth napkins.
6. Use them as drop cloths: Protect your floors and furniture while painting by using old sheets as drop cloths.
7. Make a fort: Keep a stash of old sheets in a closet for building forts or curtains for puppet shows.
8. Crafting: Use old sheets to make crafting smocks, tablecloths, or long curtains.

If you cant donate your old sheets, you can also recycle them. Many recycling centers accept textiles, but its best to check with your local center to see if they accept sheets specifically.