So I drew this chair:
|I think that I could actually sit on this chair!|
I always keep little art supplies in my purse: a small wire-bound sketchbook, a number two pencil, an eraser, and a pencil sharpener.
That's all that you need to keep practicing your drawing each day. You don't need anything more than those few supplies that I just enumerated. They are inexpensive and very portable. As for your pictures, they do not have to be perfect. I have plenty of unsuccessful attempts in my sketchbook.
Just go for it and enjoy the experience.