This Zelda item concept by Dave Delisle might just be one of those ideas you wish you had come up with. Just as in the real game, these decorations are meant to sit on your lawn as if ready to be picked up by Link.
The amount of decoration ideas is only limited by the mass amount of item pick-ups there are in Zelda. The way Dave has sprinkled them about the lawn in his concept might be a little excessive, but a few cleverly placed pieces would look awesome.
The Zelda items concept gives rise to the idea of creating item pick-ups for other games as well. There are a slew of games out there that one could draw inspiration from.