My son turned 1 on the 2nd. As you, we have bought him loads over the last year.
We limited ourselves to one pressie and bought him a trike that has a parent handle and grows as he does.
If your daughter likes music then how about this
http://www.elc.co.uk/toy-30917 it works as a drum, makes odd noises and also plays music. My son dances around the room and when it stops runs back to start it again. It also has flashing lights to amuse too.
Also for his birthday he got a swing from argos which will turn from toddlers to childs swing as he grows and a ball pool.
hope your little one enjoys her birthday