The clan Labs allow for much faster growth than any other building, By submitting crafted materials player can boost contribution by 280 per week and add either 238,000 funds or 6650 Dev to the clan, as well as gaining significant daily EXP.
The method we have stuck with for a long time has been submitting the 2nd generation resistance stardust,
10 LV1 Dark Resistance Stardust per day
15000 coins + 50 crystals per day
or
105,000 coins and 350 crystals per week
Should not be too much to ask from any clan member,
It's less than looting just 1 aura of soul jade/star-soul stone or essence of holy water per day.