A Party For My Baby

In three weeks time it will be my little boy's party and I haven't started planning anything yet. I need to organize it now so that the party will turn out good. I need to make the garden pretty and plan what decorations will I get for him. He is fascinated with lego so maybe I will do a lego theme. For giveaways I am planning to get assorted pens, pencils and erasers from smiggles then I will put name tags to make it personalize. What do you think? Is it a good idea? I am not good in planning parties. I am only a nurse :)