Can anyone help me out? Me and my partner are announcing are pregnancy to our parents on christmas…

Can anyone help me out? Me and my partner are announcing are pregnancy to our parents on christmas day, but still looking for ideas on how to announce it, something cute and special, and nothing to costly because we're really short on money this Christmas! Also I haven't got no scan picture yet so can't include that and I also don't want to make it obvious I want to take them by surprise, any ideas/suggestions? 😊