There is a fine old tradition of making toys as a lot of us, when we start out, don't necessarily have the money to buy new toys. There are a lot of things you can improvise with. Things like clothes pegs as nipple/CBT devices, for example.

I have found that wandering around a shop (a cheap pound shop, a hardware shop, even a stationary shop) can give you many interesting objects that will give you ideas for improvised devices.

For example, I recently found a length of rope washing line (soft rope, about 1/4 inch thick) in a pound shop. Its not as good as real bondage rope (which is usually thicker, made of silk and can be in different colours) but it does and was cheap enough to not worry too much about cutting it up to make smaller lengths.

I think the trick is to wander around with your 'BDSM brain' switched on, loooking at things you see in a 'what could I do with that to torture a sub with?' way.