There are many types of eco-friendly office supplies available in the market. For example, paper can be made from recycled, organic, or bamboo fibers, and chlorine-free, acid-free, and biodegradable options are available. To reduce paper usage, you can print on both sides, use smaller fonts, or go digital. For ink, soy, vegetable, or water-based ingredients are ideal and you should look for low-VOC, biodegradable, or refillable options. To reduce ink usage you can adjust the print quality, use draft mode, or use eco-friendly fonts. Pens can be made from recycled, biodegradable, or bamboo materials and refillable, compostable, and non-toxic options are available. To reduce pen usage you can use pencils, markers, or highlighters instead. Notebooks can be made from recycled, organic, or bamboo paper and spiral-free, glue-free, and staple-free options exist. To reduce notebook usage you can use digital notes, whiteboards, or sticky notes instead. Batteries should be rechargeable, solar-powered or lithium-ion and mercury-free, lead-free or cadmium-free options should be sought out. To reduce battery usage you can use power strips, timers or energy saving devices instead.