Well I went to order some keychain LEDs, but got side tracked with cleaning the garage.
During the clean, I came across some of those meal toys kids get from those fast-food joints and noticed it had a rubber push button on it........................
so I gutted it and found this.
(no I'm not cruel by pulling them apart, we have a friend that gives us all the left over one's, once that promotion is over)
the measurements are in centimetres, just thought I'd post what I found too, might save a few extra $$ here and there
(tested the same as the lightsound keychain light - mom switch, -ve for the board and 2 switch wires)