The Chalk Man by C.J. Tudor

C.J. Tudor likes writing mysteries about small towns. As reported in a January 2018 Kirkus interview, Tudor said,

"In small towns, you've got this hothouse for stuff to happen--accusations, for arguments, for fallouts, for resentments...It's the perfect breeding ground for mystery."

Engineering Tables for Public Libraries

Self-directed programming:

For kids, there are engineering tables like the ones Abby Johnson describes in American Libraries. 
bit.ly/2gM4pWc

Engineering Apps:
BOSEbuild Speaker Cube. 

Engineering activities:

Burker, Josh. Invent to Learn. 
Mercer, Bobbi. Junk Drawer Engineering.