This project is also on Hackster.io
Soldering has some nasty fumes from the flux as it burns off. I built this project before I got my fancy Hakko Smoke Absorber (which is great).
If you have an IKEA LED flexneck lamp and an old small PC case fan (I think the one I used here actually came from a HD enclosure) you can build a DIY fume blower-awayer. Neat!
Also, InstaMorph is amazing and you should just go buy some just to have around the house in case you need it quick. It's like the duct tape of mold-able thermoplastic.