What is considered Hardware?

[Luv2CUSmile]

Hiya All- I am getting an order together and was wondering... What is considered Hardware? Obviously not the liquids... anything else... Sry to seem so uneducated... I need a few parts as well and figured it would be cool if they were included...
Thx for any other info-

 

[Liscab]

I call HW the bateries,atmy and charger,the meatal parts.I could be wrong

 

[Freedom]

Hardware is everything except juice.

 

[Luv2CUSmile]

Thx Liscab 7 Chris!