Hi there!

Idiomatic expressions (by class students)

a bad penny always turns up (mala hierba nunca muere)
to be a Jack of all trades (to be the teacher's pet)
the next best thing (another option)
to have a lot on your plate (when you have many things to do in one day - a busy day)
to wear many hats (to have a lot of roles in a job or in life)
finders keepers, losers sweepers (quin se va a Sevilla, pierde su silla)
to lose one's rug (to lose your nerves)
it's not my cup of tea (it's not my problem)
to be the apple of someone's eyes (so.'s favourite person)
to be nutty = to be crazy (as nutty as a fruitcake)
to be a piece of a cake (something is simple)
to make faces at someone (hacer muecas)
heads or tails (cara o creu)
to have a cheek (tenir cara)