Packing for Trips

I hate packing for trips. I always stress myself out and in turn stress my family. I am about to go on three trips in two weeks and they are all for different reasons. This is terrible because I only know how to pack for certain types of trips. Trip one is for a long weekend and attending a memorial service. The weather of course can't make up its mind so have to pack for that. Then we are back for two nights and off to Phoenix for spring break. It is supposed to be in the 80's there so that is totally different clothes. Then we are back for one day and I go to Washington DC for four days for a work meeting. Once again totally different weather and clothes. I hate living out of suitcases so I always unpack everything when we get to our hotel but I'm not sure this will make sense. I will just turn around and repack all the toiletries so we can unpack them, then pack them, then unpack and so on. This is the time I wish I had a separate container for travel toiletries so I wouldn't have to worry. But I normally don't travel enough to justify that. So I guess we will just live out of the ziploc bags that I pack the stuff in.