Hardware & software:
- MonoDraw at https://monodraw.helftone.com for $9.99 from Rene Ritchie.
- ASCIIFlow at http://asciiflow.com for free from Rene Ritchie.
- Objective-See Security Tools at https://objective-see.com for free from Leo Laporte.
- Dice by PCalc (iOS) at https://pcalc.com/dice/ for $1.99 from Andy Ihnatko.
- iFixIt Phone Case at https://www.ifixit.com for $9.99 from Lori Gil.