It used to be the policy with the Witnesses that the unbelieving mate had the right to celebrate their beliefs in their own home . I remember a Watchtower saying something about 'allowing" the unbelieving mate one room in the house to decorate . Maybe you could research that and share it with the husband . Or if you are like me ....just do it anyways ....and tell him it is your house too ! He gets to share his beliefs with the children you should be given the same respect .
I understand how shakey it is and you don't want to rock the boat ....I have been there . I started out slow with neutral winter decorations ,snowmen,white lights ,deer. Then it was a very small table top tree (the potted kind you accent next to your door) ,and gradually my husband started coming around until I had the real thing . My situation was a bit different in that he had stopped attending meetings too ,but he was still a believer .
Something I have learned over the years is that all the horrible scenarios I imagined would happen if I did what I really wanted to do ,never really happened .
Life is SHORT enjoy every moment ,make happy memories for your children .You have every right as he does to follow what you believe in ,it is not all about keeping him in some kind of comfort zone .
Be careful of supporting the mind set that the husband is the head of the household and dictator of your life ....it is another lie we were told to believe . Marriage is a partnership with give and take on both sides .
Well that is my 2 cents worth take it or leave it ! But for goodness sakes be happy and enjoy life to the fullest !