Question

Give two ways to use the space underneath the staircase

Answer 1

One way can be this...
That you can attach a door to it at its end and make it a small store room and attaching a door will look pretty also...
Hope it helps...!!!

Answer 2

Due to the increase of population worldwide the land need is increasing devastatingly. And the land amount per person is decreasing accordingly.

That's why we have to utilise our space properly and efficiently to avoid space shortage.

Space and that the staircases is the most neglected space of a house.

You can easily use this space to stock several things or we can build a work space if the space is large enough.