Birdcage with a swing. I have included Three Bird Models ZIP file by pmoews.
You should print top and bottom parts, as well as a swing seat. Then use standard 3mm (PLA or ABS) strings of same length (8 pieces) and connect top and bottom parts (I have used soldering iron successfully for this). Attach swing using a string of any kind. Place a bird on swing... ;-) This model has some problems, and I will try to make a next version with a better swing, and maybe with a door as well.
Feel free to contact me and ask for any help in printing and assembling!