This list could change tomorrow, but all these chips are special to me, some because of the degree of difficulty in obtaining them (the white $2.50 Park Tahoe especially), some because you just don't see them very often (such as the $25 Ta-Neva-Ho). The $25 South Shore Riverboat probably is the one chip I would keep if I could keep only one in my collection - but that could change tomorrow, too.
Thanks to Jim Follis for getting this list started.