diy Projects for Mother in Law

What about either a dessert table or candy buffet? Idk if that's something you want or if your venue would require a professional to handle. But it could be something fun she could help with.

You can have her do the escort cards if you are doing those and not using a calligrapher. She can either bring them to a printer or DIY. It's one of those tasks that has to be done toward the very end when all RSVPs are in and table assignments are complete but you're also busy doing lots of other things.

What about gift bags for those staying overnight in hotels?

Giving someone busy work doesn’t honor or include them. If someone wants to and offers to do something, don’t confuse that as “including” them because it’s not. What are her skills? What has she offered to do craft-wise for you that you would otherwise get from a professional? Have invitations been mailed yet? She can help out assembling those and addressing envelopes which couples try to avoid doing. She can hand write escort cards when you get the seating arrangement finalized.

A bathroom basket is a useful project, too.