For my midterm project, I hacked the sink in our 10th-floor bathroom.

The sink had an IR sensor with an exposed control box. I cracked that open, split off the power and sensor-data lines, and got it trigger a light show under the sink and play a sound sample from a speaker I attached under the porcelain. I left a record button hooked up to it, and, pretty soon, people were recording their own strange sounds and messages that would play every time someone went to wash their hands.

The ultimate in deli interventions--the Restaurant Telegraph! Each half is place on a separate table. The switch lights up the lamp and sets off a sound. Cool, though much more fun in bars than in the Journal Square Deli, as it turned out.

Attached is the SVG file for the labels, in case anyone wants to repeat the experiment.

"Lot pots." Left on tables in the deli to get people involved in their tables and with each other. Each pot has a set of fortunes that require you to interact with other tables. Weird looking, but fun.

Our first attempt to intervene in the Deli. Bingo! Like travel bingo, but with deli stuff.