[bkraz]

I may have the opportunity to use a much higher framerate camera in the future. Please leave suggestions for things that are fairly transparent to x-rays (no metal, or very thin small internal parts), and demonstrates the utility of high speed capture (typically things breaking, bouncing, shattering). The last requirement is that the object be very small, just 1 to 2 cm long. Since learning about ptycography, I may try that as well since x-ray ptycography is one of the real world uses for these sensors.

[jcims]

I wonder if you could blow some fine mesh aluminum/iron powder through a small whistle to see any of the airflow effects.

Spurious xray emission from triboelectric effect.

Phase change of various materials changing absorption characteristics.

Capacitor discharge.

[CamperBob2]

- Aim a few watts' worth of laser light at a popcorn kernel, maybe. Might be amusing to capture the resulting kinetics when it pops.

- Put a crystal of something on a turntable and see if you can capture a video of its scattering angles. Bonus: read the movie and turn it into a 3D model for viewing.

Did you ever XRF that windup toy to see what it was contaminated with? I'll throw in my lot with one of the commenters and guess "Lead."

[s0rce]

I thought the insect breathing work at the synchrotron was cool https://www.science.org/doi/10.1126/science.1078008

[Python3267]

Here's an interesting one, if the equipment is sensitive enough you could test if you can see the difference in air densities as a .22 caliber bullet passes by.

[SweetSoftPillow]

Brookesia nana aka nano-chameleon.

[shellfishgene]

This may be a bit hard, but jumping insects like locusts and crickets?

[SweetSoftPillow]

Hummingbird