anyone built a egg timer timelapse

[adbp1]

saw this on youtube and looks simple, cheap and easy to make.
what i want to know is has anyone tried it before and if so what sort of weight can u put on them.
http://www.youtube.com/watch?v=eApGSCB5Wpo

 

[Devrij]

Looks cool, not sure about putting an SLR on one of those though. You'd have to glue a tripod plate onto the top or something to keep it in place. Very cool idea though.