Along with NBeth's suggestions of attic and basement storage: If you have a garage, those wardrobes would make stellar storage. Usually garage items -like- deeper cabinets. Paint, tools, sports equipment!, Holiday stuff, maybe even overflow can goods; laundry/cleaning supplies.. you name it.
if there's a problem with damp floor, you can build a platform out of 2x4's, then put some plastic sheeting on top, and then the cabinet. [We have some white-laminated MDF cabs. in our garage and they're on a similar base - no problems at all
to a shelter, special school, senior center or community center, YM/WCA, etc. is also a great suggestion. If they're already flattened, it would make transport that much easier (I'd think).
One suggestion: If you think about posting to Craigslist again... go ahead and include links to the IKEA website showing the setup you have. I saw this just the other day, and it worked well.