If possible replace disposable products with reusable ones (eg. food storage, coffee filters, straws, etc.).
In the garden, use coffee grounds as a mulch for acid-loving plants or around the base of plants to deter ants and slugs.
Choose rechargeable batteries and a battery charger to cut down on disposables. Eventually recyclable batteries reach the end of their life too but they can be recycled – local recycling policies vary so check with your recycling facility.
Sprinkle dry tea leaves to deodorise problem areas such as your cat litter tray.
Those little fruit and veg labels that supermarkets use can be recycled too. Peel them off and stick them onto a plastic container in the recycling bin.
Switch to LED lights. They cost less to run and last longer than any other bulb.
Replace at least part of your lawn with a meadow as a wildlife habitat, and cut down on the need for watering.
If you only need a tool or piece of equipment infrequently then instead of buying one, save resources by asking a friend or neighbour if you can borrow one. Or check online for a lending club, such as Streetbank.
Avoid creating waste. When ordering food avoid plastic utensils or straws by asking in advance.
Grow houseplants for clean air and give them rainwater occasionally as it has less impurities than tapwater.