I think you should dedicate some time with the shul administrator and make a sensible list,
1st try to figure out how much money they need, bump it up a bit, make a few highly priced items and many other affordable/recuring dedications so everyone can find a level where they can participate.
there are a lot of ideas,
I saw one shul that sells every day of the year for 5k for life, there is a big calendar in the hallway and a digital board in the center and every day has a picture of the sponsor or ad of that day.
so 5kx365= $1,825,000 if collected would this amount cover? do you have enough members that can afford either by themselves or by collecting from others?