I bought DH a lovely watch prior to DSs birth to symbolise him becoming a father - its now engraved with "I Love You Daddy" with DSs DOB and DH has already told DS that on his 18th birthday the watch will be handed down.

I have told DH that for my birthday this year (same month as my due date) I would love a piece of jewellery to symbolise our daughters birth in exactly the same way, and also because I would like to have something to pass down to her on her 18th

Not a 'push' present as such, but certainly presents around the time of birth so they may be considered that way!