Take a piece of paper, write out a memory verse or Bible text passage and then cut it up into pieces. The smaller the pieces the harder it will be to put it back together. For example, each piece could contain a single word, part of a word (harder) or a group of words (easier).
Then have fun trying to put it together and learning the Bible passage at the same time.
Double the fun by writing a different text on the other side of the paper before you cut it up. Use a different color pen on the other side or, to make it harder to solve, use the same color pen.