It's quite easy to lose a power socket behind a hedge, which is a bit annoying (perhaps the plug/socket highlight should be visible through other objects). I kept going until a plug for one of the lights got stuck between the light and the hedge corner the light was sitting in, making it impossible to pick up again.
Thanks for playing! I agree that the selection hover should be showing through the hedges, that was next on the todo list but I ran out of time!
I'm sad that you were unable to finish the puzzle, but if you wanted to see the party, there's a cheat in the description!
Do you have any other suggestions?