Ultimate Wordsearch maker is a great little tool for you or your students to create word searches of their own and import them into their blog as an interactive task.  They are dead easy to put together and require no messing around registering to create one.  If you don't have a blog or a website you can simply link back to their website and do it from there.

It is dead easy to play simply click on the first letter of the word you have found and drag it over the rest of it.  Here is one I have prepared earlier in all of 5 minutes. 

This would be a great literacy activity or extension task for any subject area you have been studying.  The website is available here.