i'm not too sure why you want a shabti, is it in life or in death? since typically it's enchanted to move and do the bidding of your Ba and Ka in the tomb, the spell, according to the book of the dead, doesn't work until after death and it is sealed in the tomb with your mummy. it's similar to all the spells painted inside the sarcophagus, while they work, you need to be inside and your spirits need to be traveling to the afterlife [aka you're dead]
if you want a little person to fetch you tea while you're reading, i'm not sure if there's one that'll do that. you could look into an ancient Japanese robot that was wound up and was specifically designed to walk with a tray so you can place your drink down and send it to someone in another room.