For dads who love nature, think of a new pair of hiking boots or an electronic device that repulses mosquitoes. This device makes a high pitch tone stir that we can't hear but the biting buggers can. Both gifts are ideal for camping-lovers and golfers also. You can typically find these at a sports or camping store.
Instead of waltzing 3d motion multi directional over to the bar to mix a pick me up I would usually find myself shaking and puking the first thing in the morning. I would then stumble to the kitchen and mix up a drink, and then gag and puke until some of the alcohol would hold. After a couple drinks I was usually well enough to start the day.
Let's consider an analogy to help you understand wedding shower guest favors. Were you ever a guest at a wedding reception? More than likely the couple gave away some special gift for everyone there. In the same way, guests at the wedding shower receive a small gift that they will hopefully hold onto for years to come--a gift which will always remind them of this special wedding.
A work party will require different kinds of party favors, so consider mini lunch coolers, candles, travel pillows, or playing cards. For a more customized option that better represents you you could send themed mint tins with your photo on the tin for the mints or pick a disco theme Broadway or rock n drinks rotational roll casino party or sports theme.
Using a face wash such as Lab Series For Men Multi-Action Face Wash, with its super-foaming cream cleanser and gentle exfoliating beads will leave your face glowing and free from grime and impurities.
If that happens then the chances of a reunion will increase massively, plus it'll be an outcome nobody pressured into happening, which is a more solid base for the future.