I am busy and cannot develop these domains.. laptopforfree.net computerwirelessspeakers.com buildsolarpanelpower.com puppyboard.com I supposed to make adsense niche sites but I have no time.. too busy... Any good advise is highly appreciated.. Thanks
Park them. That will help you save some money while you will be creating web sites. Create small web sites according to your favorite niche. There are a lot web applications which you can use.