Will there be trees? If yes, you could use loose wood from the ground as tent pegs. Then you could take some rope/washing line and attach it to a branch to lift up the centre of the tent, rather than using a stake inside (that would be a lot easier to carry than any stakes).
Without trees you could try pegging with cutlery. Maybe you could use a broomstick or some bamboo item to use as a stake. This is somewhat difficult to answer without knowing what you've got in your home, but I trust you get the idea. Bring some extra line anyway.
Don't forget to take a knife to cut things to the right lengh. Preferably one with a saw attachment.