Sometimes we get into the rut of using the same learning toys over and over the same way. Try mixing it up to combine an activity they are very good at and enjoy with something more difficult for them.
In this example, I took the wooden boards that my daughter loves to match the pattern shapes onto and hand wrote the name of each item in the design. (i.e., boat, bird, flower, fish, etc.) She then used the box of letters she has to match my hand written letters with her letters underneath each picture. As each one is completed, we practice sounding out the letters and saying the words. Sometimes for fun she likes to make the sound of the item in the picture.
If you don’t have the moveable wooden alphabet, you can use magnet letters or print the letters in a big font from your computer and cut them up.
See what other toys you can combine into a new activity. For best success, make sure to “demonstrate” what the new activity is first so they understand you are showing them something different.