Morning IRSafe, Drops Online is really a pretty good resource, especially their Drops: Reliable Securing guidance. Are you just talking about dealing with tools and equipment that you're taking to height or are you talking about surveying potential dropped objects for clients etc...? I work in Rope Access and we have a rope access procedure which details all the types of retention needed for equipment taken to height, which items can be attached to personnel to be taken to height and which items require an independent line. Is this what you're looking for? If so you can PM me and I'll try and help you out.

In our procedure anything under 5kg is fine to carry to height attached to someone. You just need to make sure that your tools are securely attached, for example we have our tools lanyarded to the rope access technician and then those tools are also put in a working at height tool pouch that has its own form of retention to the technician. If the guys are carrying a few different tools, lets say a spanner set, torque wrench, hammers etc... then you're safer to put those in a working at height tool box / peli case and have that taken to height separately. Just make sure the tools are then lanyarded to the person carrying out the work at height. Hope that's clear enough :)

For an example of where this subject is relevant, as it's Friday, see the Pirelli video of "a walk on" on Christ the Redeemer statue above Rio. It is a rather fabulous 3 minutes of viewing, but . . .