1. Aetheric Engine Pistol - Brass Steampunk Gun - FlauntandFlourish
2. Steampunk Coffee Pour Over Station / Stand - ElecGuitarBuilder
3. Boxed steampunk pocket watch - RedmerWerkstatt
4. 4 GB steampunk USB flash memory - tinyfirebox
Okay, so they don't all 'do' something, but most of them do and they look much more interesting doing it.