I'm also frustrated with gold nuggets, it seems they are almost rarest item in game. I've bought golden mine because I wanted to do trades for 5 gems, but I haven't done a single trade, because first I wanted to accumulate some golden items. Now I've got 4 golden nuggets, 28 golden eggs and 20 golden apples.
Otherwise I do like this event yet. Love ponds and flowers and community events where we are accumulating items to win prices for everyone who participate.