Here's a few items that came out of my 152 when doing panel upgrades, just toss me a few bucks for shipping and it's yours.
KT76 Transponder - Worked when I took it out of the plane EXCEPT it intermittently loses Mode C. If you don't fly around airspace that require Mode C, it should be fine. Another curious thing is the labels say 14v but it came out of a 28v install. Many avionics only have the lamp circuit be 14v or 28v dependent, so this may have already been modified for 28v. Either way, the unit should work fine in either 150 or 152.
ARC IN-385A - Another club member already got the radio I removed, but this is the original indicator that came in the airplane. The nav didn't work but I never determined if it was the radio or indicator to blame, so no guarantees here.
Clock - The Cessna sweeping hand clock. Notoriously bad at keeping time over long periods, but it does ok if reset at the beginning of a flight. Also good for filling that empty clock hole if you recently purchased a 150 with no clock.

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