Wood, tile your motherboard box, ect... Anything that's not going to build up static.
The static bracelet honestly isn't going to help much, but you should clip it to any bare metal in your case.
Here's what you should do. First, take out your case and your power supply. Mount the power supply, and plug it into the wall. Then every few minutes, touch any bare metal on your power supply or case to discharge static buildup.
I'd advise assembling your motherboard / ram / cpu and cooler on top of the motherboard box to test if it runs before putting it all into the case.