This is (part of) my ~/bin directory.
Things here usually serve a purpose, but most were quickly hacked together (some of them many, many years ago).
anagrams - create anagrams of the letters of the first word received
check_aliases - analyse your aliases
count - count how many times each line appears
feriados_portugueses - show Portuguese holidays
fileintersect - lines from a first file that are present in one of other files
filewithout - lines of a file that are not in another file
highlight - highlight patterns in a file
moonphases - phases of the moon
nextcycledir - cycle through a series of directories
samefile - check for duplicated files
parsetime - parses time into longer time periods
pwhereis - a more thorough version of whereis
timing - how much time has spent since the invocation of the script
trim - trims each line to a maximum number of chars