Play all the OnlyConnect connecting walls
1337raspberry.github.ioOnlyConnect is a UK quiz show which is renowned for for it difficulty and need for lateral thinking.
It has four main rounds, the third of which is a 4x4 board of words on tiles that must be connected to four concepts. This may have been the inspiration for a certain NY Times game.
This site has gathered all the games from every series since 2008, and will let you play them interactively.