I have lost my capo. Does anybody know of any easy DIY guitar capos one can make from items around the house?
A plastic pen (parallel sided), a bolt inside plastic tubing, short length of dowling, rubber band for tension, a scrunchie can work, maybe with an eraser behind the neck for more tension.
Works better on flat or large radius fingerboards.
The ubiquitous index finger has also been used on occasions...
A pencil and an elastic band is a classic.
Wikipedia demos one at https://en.m.wikibooks.org/wiki/Guitar/Guitar_Accessories
For this kind of things, the fastest is to look it up on Instructables. Besides the pencil and rubber band, there are also capos that need more effort to make: