S.
Hi Tenora,
It might be tough to find a craft situation that would interest those two age groups. If you are open to something else, Infinite Bounds (in Plano) offers a super birthday party. It is large enough to accommodate a number of children (and their parents). They lead fun, age appropriate games, and allow time for free play. It is a gymnastics place, but for birthday parties they also set up inflatable slides, obstacle courses, etc. They also take care of the set up, packaging up your gifts, and allow you to enjoy the party. A friend of mine just had a party there for her 5 year old and 2 year old twins. My daughter wanted (and had) her last three parties there.
Good luck, and Happy Birthday!
S.