I don’t think I have ever mentioned how handy bead boxes are for storing the screws and bolts when taking apart a plane for the annual.
I use 40% off coupons at Michaels to purchase these bead boxes. The 210 takes four—one for each wing, two for the interior. I also use a half-dozen salsa containers for things like the baggage compartment, wheels, spinner, muffler shroud, etc. The Cherokee has far fewer inspection panels so it takes half the time and fewer boxes. I have eight of these that I use to hold hardware that I purchased from Aircraft Spruce. I got tired of spending $10 on shipping for a few 25¢ bolts when my IA didn’t have the ones we needed, so I bought a couple of screw and bolt kits and ordered 10 of everything that wasn’t in the kit.
How much you save on your annual depends on your mechanic. My original IA knocked $100 off the price claiming that he could take apart and put back together a C210 in 10 hours. (It takes me at least 25 hours to clean the plugs, pack the bearings, and disassemble/reassemble a 210 so I have a hard time believing he could do it in 10 hours.). My current IA charges $700 for the inspection and his time for squawks. And we do them in my hangar so I can work when he isn’t around. Annuals are $2,000 cheaper with him and usually take only a couple of days instead of the week or more with the old IA.