A light box!!
It has been so helpful - packs up neatly, has background options, it's perfect. We have no natural light in our apartment (1 window for the living room and kitchen area) which proves to be a challenge as I work to improve my photog skills.
The light box is actually a large carrying case that unfolds into this:
(The sides Velcro together; the gaps are not a malfunction of the box... just my impatience.)
I have a cake order for a baby shower later this month & I can't wait to practice photography and lighting more!