40th birthdays are entirely underrated. For many, it’s the first significant birthday where you KNOW who your friends are and you the thought of having them celebrate you doesn’t fill you with dread. But this doesn’t have to be a formal party – that’s what 50ths are for.Instead, why not go and do something you all want to do without the speeches and canapes? We know that the list of party ideas could be endless, so endless you can’t think of any....