Eliminating waste, reducing and giving products a second (and third..) life to reuse in the same or another creative application, or as raw material for new material, both ecologically and economically are highly recommended. Good for the environment and for your account.

Avoid waste. Buy no, or as little as possible. Especially packaging creates a huge amount of waste.

fleamarketBuy unpackaged, local fresh fruits and vegetables.
Cook yourself and use fresh instead of packaged ready- to-eat products.
Buy in bulk: coffee and tea, flour, apples and others fruit, rice (loose instead of cooking bags).
Choose refillable containers.
Opt for large packs. Which are more economical.
Use single packagings consisting of only one material and good recyclability and sortable (e.g. paper and cardboard).
Reuse containers and plastic bags, boxes, jars, (wine) bottles, wrapping paper.
Always carry a shopping bag to re-use. Instead of throw away shopping bags.

First take a look at the second hand store if you want a new product.
Use simple home remedies instead of harmful chemicals: whisk, flycatcher (bell), wasp trap, yeast against ants, beer against snails, vinegar to rinse, soap instead of deodorant,...

Do not buy disposable products (disposable razors, disposable wipes, disposable cups, disposable handkerchiefs, camera, batteries,...).
Use storage containers for leftovers instead of disposable bags and disposable foil.
Use a baking pan instead of aluminum foil. Used foil can often be used more than once.
Wash plastic bags (e.g. from frozen material) again for reuse.
Use a water bottle or thermos to take beverage instead of cans and bottles.
Use a bread box instead of aluminum foil.
Use ice cube trays instead of ice-cube bags.
Use a cloth and sponge instead of a towel.
Use a grinding bar and / or replaceable single razor.
For diapers, elastic bandages and sanitary towels are fabric models that can be washed and boiled.

There is also a washable silicone menstrual cup. (No idea if that is practical and comfortable.)
Write with pencil and fountain pen (to fill with an inkwell) instead of disposable pens.
Cover the (party) table not with disposable material. Use tablecloths, disposable plates, cutlery, cups and saucers. Rent any additional material, or speak something with friends, neighbors, family. Put no milk tubs or individually wrapped sugar cubes on the table.

Make note blocks with the unprinted back of used paper.
Stick a sticker “no advertising“ on the mailbox.
Subscribe to the Robinson list, you will no longer receive unsolicited advertisings by name (either by mail, by phone, by email and SMS).

Chickens love to eat kitchen scraps and in return you get free fresh eggs. (The dried, crushed shells you give back also.)
Composting, targeting low-waste in your yard (little lawn clippings and garden waste. Either way, you can also compost them.)

Eliminate waste and take it to the recycling center: paper, cardboard, cans, caps, bric...
There are now plastic bags and boards that are made from corn starch and compostable.
For scrap metal you get a kilo price.