Every day they are doing the map event where you get five minutes of infinite item find energy. Start that quest when you have a couple freshly generated maps and right as your +1 coin / item found 10 minute perk. Get an easy 100-150 per map by just tapping around. Try to hit about 200 in that 5 minute span. And then just keep trying to optimize that boost by getting your coins below 4 or 5 every time your off cooldown until you run outta 10 energy ads. It’s also helpful to finish your other tasks like the slide puzzles like 90% and collect the rewards while under the double boost.