Cheap "cafe bike lock" idea/hack

[bikerwaser]

https://www.youtube.com/watch?v=uURfJWuKAlY

[Andyb1]

That is almost exactly what I use to stop someone jumping on and riding away.  I used nicopress crimps which can not loosen.  If I park the bike for longer I use a heavier duty cable lock and the lightweight wire lock goes through the saddle and rear wheel as I have a Q/R on the saddle stem.

[mickeg]

I use a skier type lock for just a quick run into a store.  The red lock in the photo has a retractable cable in it.

If you just want a small cable with a couple loops on it, such cables have been sold for people to use to lock their saddle to their bike if they have a quick release seatpost and are concerned that the saddle and seatpost may disappear.