Carburetor rebuild kits, new headlight buckets, seats, bits and bobs for things that need doing on the bike that I've been putting off because "well at least it's running for now" and now it's not running.
My roommate came upstairs and said "Good afternoon," and I replied with the only thought my brain was capable of forming after looking at parts for a moderately unpopular 1981 Honda motorcycle.
"The internal combustion engine was a mistake."