Lights

The lockblocks are great, the velcro is the super-strong type, you really have to yank on it to get it to separate and undo. The plastic holder pieces are also soft rubber and automatically mould to whatever that are wrapped around, so you can really crank the velcro holding straps tight. No slippage or wobbles at all.

+1... I had my doubts about them too but they are very secure and rattle free (unlike many of the 'normal' bike attachments I've used). Super-quick removal too obviously...