Arduino Robot is quite easy to create as the basic need are quite compact, needs not much of electronics . With $100 budget you can create an Arduino Robot.
People often searches with Open Source DIY Robotic Arm Kit – factually, this is Arduino like odd way of thought. If you can make a scissor to cut a paper with servo motors following a line – that is a robot.
DIY Stuffed Robot with FREE Sewing Pattern and Tutorial by Little Inspiration
Invasion Of The Little Ones - assemblage sculptures - robots - Reclaim2Fame by Reclaim2Fame, via Flickr
The *Ultimate Robot Kit* great for learning robotics, Arduino and scratch programming
Another tutorial for a robotic arm that mimics the movements of a glove.
Portal Gauntlet (On Arm) by ThePandaPastry.deviantart.com on @DeviantArt
Many Toys For Kids Are Great to Mod & Use With Arduino, Raspberry Pi or others. Here is Robot Arm & Gripper Buying Guide For DIY Electronics.
Picture of Robot Arm Arduino App
Would make a great 'daddy' robot