Hat for Raspberry Pi with a number of sensors:
BME280 temperature, pressure, humidity sensor
LTR-559 light and proximity sensor
MICS6814 analog gas sensor
ADS1015 analog to digital converter (ADC)
MEMS microphone (datasheet)
0.96" colour LCD (160x80)
Connector for particulate matter (PM) sensor (available separately, see https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable?variant=29075640352851 )

Air Quality Station v0.9 on a Breadboard
Measuring & plotting : °C, %rel.H, Pa, NO₂, C₂H₅CH, CO, CO₂, VOC, PM1, PM2, PM4, PM10 also: Count Particles of Sizes: 0.5, 1, 2.5, 4 & 10µm
See https://wiki.seeedstudio.com/Sensor_gas/ for gas sensors

Mechanical keyboard, includes USB hub.

Found on Leah Neukirchen's blog https://leahneukirchen.org/trivium/2021-09-19

Phishing-resistant two-factor authentication (2FA) devices that help protect high-value users
Works with popular devices, browsers, and a growing set of apps that support FIDO standards
Built with a hardware chip (with firmware engineered by Google) to verify integrity of the key
Sold on https://store.google.com/product/titan_security_key?hl=de for €35

"True" random number generator, found via https://github.com/dirkx/infnoise

Found on https://input.club/links/ via http://kiibohd.com/

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Found via the COFF mailing list.

A Simple PICTIC using a 10 MHz XO timebase, no prescaler, and a unity gain buffer provides an interpolator gain of 400 for a resolution of 250ps suitable for GPS monitoring.