I wanted to learn to play the piano when I was young, but we didn't have a piano. A friend tried to teach me to play a little bit, but I had no piano to practice on so that didn't go very far. Electric piano keyboards seemed like a good idea although many of them do not have full size keys so they are not quite like a regular piano. Then I came across roll-up piano keyboards. They have full size keys. They roll up to a compact size. Many run on batteries but some have an AC adapter. They usually have headphones so your music won't disturb others. Some will connect to a computer, and your music can be saved on your computer. They are relatively inexpensive so almost anyone who wanted a piano could have one.
roll up piano.