I'd choose student grade soft body or fluid acrylics with a slow drying label. They spread easily and clean with water while wet, and give you more time so the table stays tidier. For a small place with a curious cat and an eight year old, look for paints marked non toxic and low odor. Start with a modest set or just the primary colors plus white to save money, then add a couple favorites as you go. Choose smaller containers so less dries out between sessions. Gentle on the nose.