Mouse: You can opt for the iBall Speedster Laser Mouse for 550 bucks.. Its good and serves its purpose.
Other stuff/accessories I use: A USB hub, a pen drive and a backpack
@Anish.. thanks for the suggestion.
But almost everything on that site relates to macs !
I doubt if the sleeves will fit my laptop.
I might have to look for something locally.
@hp-india I will check out the mouse you suggested.
Thanks.