Lots of mirrors.
Lots of construction type toys, computers, listening station - tape/cd player which takes multiple headphones, role play area - kitchen, workbench etc to be rotated with relevant dressing up etc, sand/water/other tactile play, lots of different craft activities to be rotated, appealing reading corner - books in easy to see shelves, comfy cushions/chairs to sit on
computers as well as what everyone else said.
Kitchen, dressing up, water/sand tray, writing area, easels, farm, interactive white board that is not three feet off the ground.
There is NOTHING of this sort in my 5 year olds classroom in Australia. No learning through play at all.

oh yes, we are

Our infant rooms here are for newborn to young toddlers.
In THAT case: science kits, board games, books, puzzles, art materials, sensory tables...when I worked in a room with these ages the biggest hit was the karoke machine

Whoops - we may be misunderstanding my use of the word infant here. I mean young school aged children - aged 5, 6 and 7.
Swings, board books, bulletin boards with art, baby sign language cards, soft clean toys, rattles, lots of gentle caregivers!

i am trying to persuade my headteacher to stump up some readies to improve my classroom, which is looking very tired. What activities/ equipment/ fixtures and fittings would you want to see in your child's classroom?