My DS1 has just started school nursery and has come out today with his first party invitation, it's started already!!! 
Could I please ask for any tips or hints about this stuff? Like what kind of presents do you get? We don't have a lot of spare money so if this is going to be a regular occurrence, I'd like to try to keep costs down somehow!
I will always reply to invitations either way as it's just rude not to!
Thanks in advance 