user14424: Could I use something like this as a capacitive button for my arduino project?
http://www.banggood.com/10pcs-25mm-Vintage-Round-Metal-Buttons-Craft-Scrapbooking-Sewing-Suit-Shirt-Button-p-1011485.html
If I connect it into something like this... http://www.banggood.com/MPR121-Capacitive-Touch-Sensor-Module-For-Raspberry-Pi-Arduino-p-969002.html
Would that make that button a capacitive button? Or am I totally barking up the wrong tree here?
Thanks :)

user2881: Yes, that would work. 
The only thing to watch out for is that the buttons might be plastic with a thin layer of metal on top (Chemical vapor deposition). 

14424: <p>Could I use something like this as a capacitive button for my arduino project?</p>

<p><a href="http://www.banggood.com/10pcs-25mm-Vintage-Round-Metal-Buttons-Craft-Scrapbooking-Sewing-Suit-Shirt-Button-p-1011485.html" rel="nofollow">http://www.banggood.com/10pcs-25mm-Vintage-Round-Metal-Buttons-Craft-Scrapbooking-Sewing-Suit-Shirt-Button-p-1011485.html</a></p>

<p>If I connect it into something like this... <a href="http://www.banggood.com/MPR121-Capacitive-Touch-Sensor-Module-For-Raspberry-Pi-Arduino-p-969002.html" rel="nofollow">http://www.banggood.com/MPR121-Capacitive-Touch-Sensor-Module-For-Raspberry-Pi-Arduino-p-969002.html</a></p>

<p>Would that make that button a capacitive button? Or am I totally barking up the wrong tree here?</p>

<p>Thanks :)</p>
 2881: <p>Yes, that would work. </p>

<p>The only thing to watch out for is that the buttons might be plastic with a thin layer of metal on top (Chemical vapor deposition). </p>
