I got this idea from playing another game which i forgot the name of.
For example in the clan page, there should be another tab beside the current ones but only for the clans players.
In this tab you could like donate loot towards a level of a clan ability. For example
If someone donates elixer towards the defense, at level one you would get a 2.5% defense bonus so your towers and defensive buildings get a damage per second bonus of 2.5%.Same goes for attacking but for example the at level one Attack Clan Bonus, each raid you do, your troops get an extra 2.5% of damage per second. To buy level one your clan would have to pay 5M and each time you want to level up the clan ability, you have to pay 2x the amount as the last level. For example to buy it would be 5M, to get it too level 2 it would be 10M and so on for maybe thirty levels. Each person would have an donate limit per day and could donate a certain amount each day. There would be 2 options to start of with such as Attacking and Defending, but more would be added later on such as loot bonus and so on.
This was a randomish idea i got but i think it would be a great addition to the game and to the clans.
