Board Thread:Fan-made Contents/@comment-31211271-20170319052009/@comment-34143896-20180303083840

Construction Site unlocks at lvl 25

Rewards: 2500/ 4620/ 7290

Bricks

Huge Nest unlocks at lvl 30

Rewards: 3780/ 5924/ 8590

Feathers

Colesent express unlocks at lvl 35

Rewards: 4620/ 7290/ 9730

Coals

Tinkering factory unlocks at lvl 40

Rewards: 5780/ 8620/ 11030

Sprockets

I think it would be a good idea to have expeditions that give you Ototo materials.