Should I put up a Christmas Tree and decorations with the risk of Mom taking them and hiding them in her room so they won't get "stolen?"

The only way to get out of this is to just have some tree and have fake boxes underneath it while you stuff the real presents in your own room or one behind lock and key, then drag them out day of and hope it doesn't trigger her.

Of course you should put up your Christmas decorations! It's the most wonderful time of the year(to me anyway) and needs to be celebrated accordingly, of course while remembering first and foremost the real reason for the season.
You can keep it simple if you are concerned with mom hiding the décor, and you can keep the presents hidden yourself until Christmas Eve or even Christmas day if needed.
So get that tree out today and have fun decorating it with your mom.
MERRY CHRISTMAS!!!

I don't know if you can get this in time for Christmas, but this has taken the stress out of my life regarding Christmas decoration. The pop-up tree. It's got lights and is fully decorated with the ornaments and decorations ATTACHED to the tree. One link is below and you can get it thru Amazon
https://www.brylanehome.com/products/fully-decorated-pre-lit-6-ft.-pop-up-christmas-tree/301164401.html?glCountry=US&glCurrency=USD&utm_source=google&utm_medium=ps_pla&utm_campaign=[ADL]+[PLA]+Smart+Shopping+-+Holidays+-+Seasonal+Christmas&utm_content=Smart+Shopping+-+Holidays+-+Seasonal+Christmas&utm_term=&affiliate_id=049&affiliate_location_id=01&utm_adid=pla-1435399935302x131364986554x14942498289&gclid=EAIaIQobChMIps_C1KPh9AIVi8mUCR1IOAGYEAQYASABEgKJ3fD_BwE

Go out and buy a huge package of inexpensive plastic ornaments from Walmart. They look nice, are unbreakable and won’t cause any other problems.

Give her packing tasks to kee her busy and happy.

I have downsized considerably from the huge tree with all the trimmings but I still LOVE looking at my beautiful 3 ft tree. You say you both love the holiday, then by all means decorate with a simple tree - maybe just a ton of lights which looks lovely. (Keep the gifts in another part of the house and put them out just before they're ready to be opened) as someone else suggested.

As annoying as putting up a tree or decorations might be, they also mark the passing of time and do a little to indicate that we're at a particular time of the year.

I would say it matters, no matter how small the effort you make.

Why bother??? I'm not decorating and my mom doesn't even hide things. It's just too much work when our lives are already busy and stressful. Maybe put up a few simple things and call it a day.

I’d consider getting a smaller tree even one of those tabletop tree decorated with lights and a few ornaments - don’t use any that are extra special that you don’t want to risk them going missing. Dollar stores and the such have cute ornaments that will give holiday spirit without the worry of having a lot of special ornaments possibly disappear or break

If it’s something she is asking for and something you both enjoy I think a tree and some decorations are an important thing to do. It doesn’t have to look the same as it has in the past, perhaps a smaller tree or just lights and maybe some ribbon chains or as someone else suggested just enough inexpensive and non sentimental ornaments from Walmart or something for her to hide (why take away that need entirely) presents in your room or somewhere she out of sight and mind. Then just before the greats get there add the ornaments you want to the tree and put the presents under it so she doesn’t have time to hide them for safety. After the family leaves remove the valuable ornaments again and enjoy the lights and chains. It sounds like the season and decorating for it brings you both joy don’t deprive yourself or your mom of that. I know I love the season and have to have some festive decorations around me but I have learned over the years that it doesn’t have to be the same each year. Have a wonderful Holliday!

Sure put up the tree and decorate, when decorations start disappearing, change the holiday to Easter and do the decoration hunt.😊