Fate/Grand Order ~ Crack Headcannon:
Between Iluvi and Merlin, Gil now has 40,000 rubber ducks in his treasury. They all increase in size from tiny to a giant inflatable one with a crown made out of tiny rubber ducks.
The giant one is named King Donald Duck appropriately.
Gil can’t move when he next visits the treasury because of the 40,000 rubber ducks.
Gil also gives this to Ishtar as her percentage of his treasury.
Iluvi is very disappointed and misses her rubber ducks, but also brought up the idea to give them to Ishtar. It was so amusing that he couldn’t let that opportunity pass him by. Gil was so satisfied seeing Ishtar’s horrified expression upon realising what just happened.
It was worth seeing her face when she discovered the ducks. Almost as good as Gil’s reaction when he looked so confused about it.
This is why rubber ducks got banned from Chaldea and why Iluvi is only allowed nice things in Chaldea if it is within moderation.
This makes Iluvi sad so Gil allows her to keep one duck. He realises the flaw when she keeps the giant inflatable one and puts it on his throne sometimes to remind him he needs a break.
The lesson in specification has been learnt and he regrets not doing that.
Enkidu would casually wander Chaldea’s halls not knowing why people are staring at him and laughing... until he spots the rubber duck on his head that Merlin glued to his head using magic.
Enkidu loves the duck and once he gets the duck off of his head, he keeps it and has it in the bath with him.
It keeps him amused and away from harm because of the cinnamon roll he is. He is also grateful for the company of the duck. Especially when Gil isn’t around or is busy.