This is a plastic Sonic the hedgehog "money box". A money box is like a bank (piggy bank) and likely has a slot in the top of the head for your coins. This is clearly quite 'classic Sonic' in style. Chubby round-body Sonic is sitting on a small pile of bricks (the texture is hard to see). With large pupils, a very round head, and tiny ears the design is very old-school. Interestingly, he has his hands clasped together, which is rather unusual. This likely helps to make the bank easy to form, as it is essentially a shaped jar.