Upgrade the bed: spend coins to raise income per second
5 min read
ResourcesUpgradeBed
Tap the bed for the next output, coin cost, and door requirement. Door high enough and still stable? Then raise the bed.

Tap the bed to see next-tier coins per second, the coin price, and what door level it wants. As shown above, the Shabby Cot is 4 Gold Coins/s, 50 coins, and needs Iron Door LV2.
If the door is too low, raise it first, then come back to the bed.