lepší něco než nic

They're only going to agree to some of this, but half a loaf is better than none, I suppose. (Oxford Idioms)

smůla, pech

I've made my decision--I'm going to the sell the car, and if he doesn't agree with that then it's hard cheese. (Oxford Idioms)

tvrdý oříšek

Manchester United will be a tough nut to crack. Macmillan Dictionary

mít zaděláno=být těhotná

When baking a cake, manufacturers of cake-mixes were told, women were acting out symbolically the birth of a child (not for nothing was the vulgar phrase for pregnancy a "bun in the oven").  BNC

"And as my disgusting stepfather walked out two and a half years ago," pointed out Perdita, "the Committee are going to think it pretty odd that Mum's got a bun in the oven." BNC

Called me frigid and said all the other chaps' girls were willing enough, and would it matter all that much if he put a bun in the oven for me? BNC 

nabrat si toho moc, mít plné ruce práce

I can't help you next week, I've got too much on my plate. (Oxford Idioms)

mít něčeho nebo někoho plné zuby

I've had a bellyful of his complaints. If he doesn't stop, I'm leaving. (Oxford Idioms)

podat si někoho

The union leader eats managers for breakfast. (Oxford Idioms)

mrknout se na

Come over here and have a butcher's at this! (Oxford Idioms)

velký jedlík

I'm still a big eater but now I choose all the healthy options, says Odette. BNC

The food was excellent and I was not charged much because the cooking was done on quite a large scale--I was not a big eater so my lunch did not make much difference to the running of the place. BNC

nestát za nic, nestát za zlámanou grešli, nestát za nic

He is so rich that as far as he's concerned, the money he lost doesn't amount to a hill of beans. (Oxford Idioms) 

na rtech med, v srdci led