Alphabet Decorate the Letter X Playdough Mat Upper case
The kids could use a variety of playdough colours, or just one colour and some crafty bits and pieces, to model a big letter X. It's a great way to get them familiar with the shape of the letter.
Alphabet decorate the letter X playdough mat uppercase - Log in or Become a Member to download
I'm not sure how you model an X-Ray out of playdough - but perhaps the kids can come up with a way? You might relax the rules with this playdough mat and ask them to model words ending with the letter x, too.