With the relationship ending suddenly, you likely didn’t come to hate them as you may have had they lived. Think about it, another thirty years with that person? Ya ya, sounds wonderful to me too. Since you were once loved so well, and you’re so young, you’re likely to start dating again. That must be extremely difficult. Kudos.
So look at you go, all dating again, love that. I always wondered how a new person would feel about any mementos from a past spouse. There is absolutely no reason for them to be jealous because there is no threat to them. It only shows how much love you are capable of; I think a strong person would welcome that.
Take down the shrine, throw away their teeth and donate clothes to charity, sure. Sacred photos that include your children should be no threat whatsoever to someone who loves you.
What do you think you should be allowed to keep in this situation?
PS My grandmother took a date to granddad’s funeral. Never too soon people, never too soon.