Those doing the B/Ham KE consortium 11+ exams are probably aware that the test papers normally include a derivative of the cloze within the questions.
You are also also probably aware that there are not many cloze test resources available.
You might therefore but interested in a couple of sites that I have stumbled across which contain free 'create your own cloze test' materials.
The following is a general link to a range of free creation materials:http://jeffreyhill.typepad.com/english/2010/06/make-your-own-cloze-tests-with-cloze-test-creator.html
The 2nd link is to a specific cloze test creation site that seems to work well and enables you to use your own material and select specific words words. I like this:http://www.oup.com/elt/global/products/ef_teachertools/elem/
Hope these are of interest and useful. Suggest you use your own passages rather than the std material which is foreign lang oriented.
Please remember Mike's comments about the form of cloze in the recent tests which had missing letters from words rather than whole words, so don't go overboard on this.
Hope this helps and provides a bit of variety.