1) Capital/lowercase Memory. Using a large and easily read font, make an Excel workbook page of the letters of the alphabet in lowercase and uppercase, with one letter in each cell. Make sure you make borders visible for easy cutting. Print out the letters onto cardstock, then cut them up for a Memory/Concentration game to identify and match uppercase and lowercase letters.
Tip: Start with a small number of letters (like 10) first, to avoid the game being overwhelming.
2) The Name Game. Using a large and easily read font, make an Excel workbook page of the letters of the names in your family and/or your last name, one letter in each cell. Make sure you make borders visible for easy cutting. Print out the letters onto cardstock, then cut the pieces up. Ask your child to use the letters to spell out your family's first names.
Tip: To teach name-spelling, try putting the names to the song B-I-N-G-O. My family used it for me, and now I use it for my kids! Trust me, if it works for Breitenstein, it works for anything.
3) Stairsteps. As a spinoff of a classic Montessori activity, print out an Excel workbook page with large-width columns and rows, borders visible (as an option, you can fill in the cells with color). You'll be cutting out a strip of one cell, then a strip of two connected cells, then of three cells, etc. Place the various sizes of connected cells in an envelope, and see what your child does with them (Montessori functions with minimal instruction, in my understanding). If your child needs assistance, see if they can arrange them from the smallest number of squares (or rectangles) to the most (or least to greatest, if you're trying to teach these terms).