There is a whole community around maing modified Furbies, called "oddbodies", which I was part of for about a year. After the first few - which I and a friend designed - we also took commisions and worked with the buyer to create each one. I did most of the construction half, and made over 20 long Furbies in that time - plus many more with less dramatic modifications.
The finished piecs were shipped all over the world, I believe the farthest one traveled was Japan. We also managed commission pricing and budgeting, though at the time I was in school and it was more for fun than making a big profit.
Long oddboddies based around the standard Furby model. Using the faceplates from real (non-functional) Furbies, modified to be pose-able into different facial expressions.
Made out of either an original 1999 Furby Buddy faceplate, or resin replicas.
Made out of McDonalds Happy Meal Furby faceplates, or resin replicas.