If you are looking for a truly cheap and effective gift, there is nothing better than a unique plant that the person you love can grow for years. Regular flower pots are so common these days that I would recommend something handmade that would make it nicer and way more original.
There is Hanging Plant Holder idea on refinery29.com which I loved so much I decided to share it with you. Kristy Kurtz made the whole thing, and Shanita Sims added detailed photos to the entire tutorial. It is so easy that even a person with two left hands will manage to complete it.
Of course, as usual, try to be inventive and creative. Yo may want to use different weave, crochet it if you have such skills, or even make it knitted. Your imagination is the only limit here.