Yoga equipment can easily be improvised at home with rolled blankets or firm pillows for bolsters, any kind of belt or scarf for a yoga belt, thick books for yoga blocks, and any floor surface – you don’t even need a yoga mat if you have a carpeted floor!
See below for a few resources.
Mats
If you have a carpeted floor, you may not even need a yoga mat. Here are a few mats if you decide otherwise
Bolsters
Rolled blankets or firm pillows work great for impromptu bolsters. Some poses can even be done on a chair or stool.
Here are the bolsters I have. When they are new they feel big and stiff, but you can remove the cotton stuffing to make it smaller / less firm to fit your needs. I recommend keeping the cotton batting in case you decide you want a firmer one later.
Here are the smaller bolsters which are also very useful.
Belts
Any belt or scarf about 6 feet long will work for a yoga belt. These yoga belts are 6 feet long with a buckle.
Blocks
Books approximately 3 inches thick work well for makeshift yoga blocks for hand work.
These are the blocks I use: