Do I need actors?

I will not rely on actors for most of my advert. I will just need the arm or the hand of someone in order to pack the lunch box. I am not planning to show anyone’s face, so in fact I could just use myself to create this piece. If need be, I can get my mum or my sister to help me and this would be helpful. If I need any variation, I could get my dad to do it for me and therefore I would be using him in my advert. The only time I will rely on someone else or me for the voice. I don’t really want to use myself, and therefore may try and get someone else to record for me because I think that would be more professional.