This is in no particular order:
1) Backstage Safari - At least that was the name then - I don't think they off it anymore. You got a tour of the animal enclosures and backstage areas of the park. We pet a rhino and saw a giraffe up close. This was back in 2002 so it didn't include many extras - just some bottled water and packaged snacks, but I thought it was very neat.
2) Keys to the Kingdom - This tour is awesome and I would love to do it again.
3) Candlelight Processional - At DL and Epcot. I LOVE this and would almost always choose it over
MVMCP
4) MVMCP - COLD and bad cookies/hot chocolate. Seems wrong that you have to pay extra for the holiday fireworks and parade, but it is very festive.
5)
MNSSHP - Fun, but not sure it's worth the money. I do love the Halloween parade and Hocus Pocus show. I would not take little kids who can't stay up late because it's so much money.
6) F&W festival events - we did the French Luncheon a few years ago. Lots of wine, little protein. Led to me taking a 3+ hour nap! It was fun, but not sure it was worth the money.
Years ago before they offered the dining plan I went to WDW with a package called Discovery Magic (I think that was the name) it included a number of wishes per day. The wish could be a meal (and I don't believe the Signatures counted for 2) or something like a tour. It was so great and the best part was the meals INCLUDED gratuity. So the servers would load you up with freebies (like a lobster tail side or bottled water to go) to increase their tip. This was probably the best thing we ever purchased at WDW. Certain recreation was included (mouse boats), but not horses at Trails End. This was even before the Silver/Gold/Platinum plan.