LunaseeStudios / Shutterstock.com Milk & Juice Cartons Recycle Curbside LunaseeStudios / Shutterstock.com Screw-On Caps Are OK It’s OK to leave the screw-on cap on the container when you’re recycling it. Ways to Reuse Use as Floor Protectors Protect your floors when you’re moving furniture. Cut open a clean carton and place pieces under the legs of chairs, sofas, tables or dressers. Carton Craft Projects Empty cartons can be used for a lot of fun craft projects. Check out these ideas from DIY to Try.