Need To start working on something new :)

I had stop selling puppy's, soft toys, and doing online business for quite sometime now. I should start off a new business and earn some money online. Being busy is good cos when u are busy means u are earning a lot of $$. What online business should I do? Best is I don't need profit... In Facebook I saw a lot of people selling pre-order shirts.... I wonder how much do they earn... There is slot of people doing that kind of business so I think it is really competitive in this. But ok la I still can try or maybe think of other things to do....