Keyword Tool Dominator offers a useful set of identical tools for getting long tail keyword suggestions from 7 major platforms. Register for free, and you will have 3 free daily searches per each of 7 tools (3 searches without registration):

1. Google Autocomplete Keyword Tool
2. Amazon Keyword Tool
3. YouTube Keyword Tool
4. Bing Keyword Tool
5. eBay keyword Tool
6. Google Shopping Keyword Tool
7. Etsy Keyword Tool

All tools have 2 windows: for initial results and for your selected list. You can download selected keywords from the 2nd window. Use a search mask like “how * money” or “what * camera” if you want to have the * blanks filled automatically.

KTD also offers a Chrome extension.