Just give one as a gift occasionally. The holiday season is great for this. On your way in, "Merry Christmas Frank!" and hand one out. Or even just because. "Ke

Just give one as a gift occasionally. The holiday season is great for this. On your way in, "Merry Christmas Frank!" and hand one out. Or even just because. "Keep up the good work, here you go" Its not about bribing to get a specific favor. Its about getting on good terms. Having people like you is a good thing and it makes their job a bit better and can make their day a little brighter. win-win