I really don't think I'm being unreasonable.
Ex DH is taking the kids abroad in the summer. He took them abroad last summer. I bought and packed summer clothes, sandals, toiletries, sun-screen etc for them. He didn't buy or pack anything. We live in Scotland so very few hot weather clothes are required so most of the clothes were bought specially! I also packed an overnight bag with extra clothes for the plane, books, games, colouring, an old iphone I loaded with games, my daughter's Nintendo, spending money etc.
Ex DH claims the hotel housekeeping staff stole some of the girls' clothes, my overnight bag, the spending money ($100), the iphone and all the games and books. I sent ExDH a list of around fifteen items that were missing, and he said he'd look into claiming it on his insurance. It has never been mentioned since.
AIBU unreasonable to tell him that he can buy and pack their summer clothes this year? We have a very difficult relationship. He will never forgive me for leaving him, and regularly phones and shouts at me, even three years later, so I know I will be accused of being obstructive and petty.