While you can buy equipment from the store, you may be able to use things you already have at home to grow plants or compost organic materials.

DIY Garden Tools

You can make tools out of garbage or recyclable materials.

Use your hands to get into the soil and mix things up.

Large kitchen utensils such as forks, knives, spatulas, spoons and others are great for digging and cutting

Use old gloves, socks, or other materials if you are uncomfortable using your bare hands.

Sticks, saws, axes

DIY Plant Containers

Use that milk jug as a pot.

Coffee tins, plastic containers, toys.

Build a garden box

https://www.gardeners.com/how-to/vegetable-gardening/5069.html

Soil:

Why buy soil when you can dig some up?

Got into your yard, local park, or some other place you know where you can get small amounts of soil.

Use your knives, utensils, sticks, to loosen and dig up

DIY Composter:

Composting can help create more rich soil that can be used for your plants.

Just like pots, you can used milk jugs and other containers to compost in small batches.