Here are a few sample pages from the Puzzle Pack for Mrs. Frisby And The Rats Of NIMH by Robert C. O'Brien, including
1 Fill In The Blanks page
1 Matching page
1 Magic Squares
1 Word Search
The whole Puzzle Pack has about 130 pages of materials and answer keys. You can click on the Puzzle Pack picture on the cover page to order the whole Puzzle Pack.