Thank you, everyone. This is going to be a cool present for Mark.
I emailed Sharon yesterday. I told her to keep watching her mailbox for little "surprises." She emailed me back and said, "okay, just leave me in the dark. I love surprises."
If anyone should like to call Mark at the Rehab center, Sharon sent me his number there, and she says he can now answer the phone by himeslf (which he could not, at the time of the horn tribute). Just PM me and I'll send you the number.
Again, thank you all. We probably won't be able to come up with enough to foot the whole bill, BUT, we can sure put a dent in it.
Keep 'em coming.