While trying to figure this out, don't forget to leave room inside that box for a lot of styrofoam packing - you know - those big pieces that are formed to fit around the item the box.
I don't think it can be a vacuum (unless it's one of those where all the pieces fit into a small box but when all put together it "builds" a regular vacuum), but I was thinking the same as fabric whisperer - embroidery machine or serger. But you can probably figure it out. Is your sewing machine old? Have you mentioned you'd like a new one? Have you complained that it doesn't do this function or that function? Stop and think about your conversations with mom. We moms can be really devious sometimes and pick up on every little thing we hear!
But you know - sometimes a real surprise is so much better!
Happy Birthday, and let us know what you get!
I know - this has been a real help, right?