Useful and interesting no-drop items

[Frysk]

Last night I saw someone link this Worker Sledgemallet and I was astonished at never having heard of it before. It made me realise that (through forums and EC tunnel) I am under-exposed to no-drop items, which never hit the market. Now I want to discover more!

I'm thinking more about questable or campable items than raid drops. If you can think of an interesting or useful no-drop item, please link it here. Even items that are just decent stats, if obtainable at appropriately low levels. If many items are posted I'll tally the links here.