I was going to suggest what Rhonda did, the sand, cool whip, or shaving cream on a table. This worked great for my students when I could tell they needed a different outlet. It even worked with my fifth graders for their spelling words (it also got the desks clean with shaving cream).
For counting, you may want to find simple connect the dot books. You may also want to get attribute bears or a bunch of different types of objects. Let her sort them into the different, like piles and then have her count them out. You may also want to make a simple easy-to-use bar graph so that she can fill it in.
I'm assuming she has already started Kindergarten. Ask the teacher for supplementary materials and suggestions.
Find out what writing style the school is using. There is no point teaching her to make letters and numbers one way and then for her to have to relearn them another way. That will make it even more frustrating for all of you! Most schools are using the D'Nealian or Modern style, where all of the lower case letters have tails on them. Traditional or Zaner-Bloser is the writing style you more than likely learned...sticks and balls. You can go online to find sample alphabets and numbers for her to trace and for you to use as a guide.
I haven't done this, but you could google "teaching numbers counting." I bet you'll find more information than you ever thought.
Good luck!