There are two basic ways to have gear after security has examined you.
1) Sneak something through that you know they would have taken away.
2) Carry items which they will not confiscate but which can do double duty.
I prefer the second. Building a kit around the presumption that you can fool Big Brother is too likely to wind me up in jail for attempting to smuggle contraban items. The one time I think I will get away with something is the one time that the security guard will select me for a full - body cavity search.
Carry a glass or metal vanity mirror compact. This will serve as a blade in extreme need and even guys can get away with it if you don't mind being laughed at by the guards. Carry a CD or twelve in a music folder - These when broken in half provide decent serrated blades. Carry the Rescue-me tool as discussed on this forum.
Duct-tape, twine, super-glue, bandaids, CPR masks are all fine everywhere. The troublesome items are blades or anything that could be a blade. The amount of little gadgets you carry will determine the amount of time spent getting through security. gadgets carried on a keychain are bulky but very quickly examined and passed. Gadgets carried in an altoids tin with paracord and electrical tape wound round will cost you some time. Review your possible scenarios and determine if you really need any of the contraban items. As naked as I feel w/o my Wave, I really don't have any responsibilities other than self defense that would require me to have a blade in any of the "secure" sites. At work I may need it to remove the case of a PC or to spread my PBJ on a bagel but in a court-house or airliner I probably won't be doing either of those things. Now, if I worked in a court-house I might have a slightly more difficult time.
For items that I might have a difficult time getting into my work site but still feel that I need, I can improvise from permitted items or I can mail myself things at my work. My mail still gets through to me without being molested. This would allow me my full range of tools in a desk drawer where I could get at them without much trouble and not have to try to smuggle them past the guard every morning. This is especially useful for items which management will allow you specifically but which, by training and stupidity the guards may disallow.
If you must try to smuggle items then I would suggest hiding in plain sight. An altoids tin is metal and unless opened you could hide anything within that would fit. If the paint is new and it looks like a box of candies then they might just see a box of candies and not open it. - You could get lucky - or not? Or you could try any of the nylon composite knives. As long as they don't see these they will not trip metal detectors. But still, beware the body cavity search. They will find these items and you will be penalized for smuggling.