In human todo systems, most of what we think of as deterministic is just badly distributed randomness. 
I get great mileage out of a script that selects tasks at random. It seems to overcome the friction of choosing and getting started. (Inspired by Mark Forster’s random method.)
Also have had some success this year with physical cards. Bought a thousand blank playing cards for £15 on amazon, and equipped with Sharpie, was surprised at the difference being able to think kinesthetically makes for me.