I've noticed that robots are still a popular choice for chidlrens interiors and think this also works really well for a party. Create the mood from the moment your guests arrive at the front door, by turning it into a control panel or have a large robot, made from cardboard boxes & other bits and bobs, to greet guests as they arrive at the party entrance. Then let your little guests create their own robots from old boxes, bottle tops, scraps of tin foil or have your own robot building laboratory and let the children build robots from Lego or Mecanno. For a sweet treat the children could build robots from marshmallows and a little glace icing or use cocktail sticks to ensure the robots arms and legs stay on! Robot dancing would be great fun and you could even play robot musical statues. For quieter activities your could find some robot themed printables for the children to colour in or make fun robot themed wordsearches.
Robot party food could include your own mix of nuts and bolts, small pots of mixed crisps or sweets. The birthday cake could be a robot, made by putting together different sized rectangular pieces of sponge, then iced in primary colours or even silver. Cupcakes can have robot themed toppers or even ice individual cakes with different parts of a robot. Party bags or favours could be robot toys, paper robot kits, robot shaped crayons or even little boxes of Lego.