Mule chest discoveries

In the bottom drawer, audiotapes from 20 years ago - these once gave me a lot of pleasure, in the days of Walkman. Now - they are gone -

In the chest, unopened for a good two years ... my collection of knitting wool, some of it dating back quite a while. Looks a mess; needs sorting. Not gone yet ... I just couldn't face it.

What to do with materials for projects that you might get back to? Many times I've given up knitting for months or years, and then started again. Are there medically-supported programmes for knitting cessation?