It used to be that it required a storefront office to become a travel agent but the internet has made it possible to do this at home with no employees. One of the advantages is that you can become a licensed travel agent with minimal cost and effort. Once you become licensed, you can go to cruise lines, hotels and airlines and get free trips under the understanding that you want to check out their offerings for your clients. I know one baby boomer who works with her local senior citizen group and makes a nice living organizing trips 3 or 4 times a year. If you are interested in becoming a travel agent, you might want to check out this website http://ad03fe4a6a7x6tf7p1j4-k0hjy.hop.clickbank.net/
It is very easy to become an affiliate for any of the airlines, cruise lines, car rental agencies and Hotel chains.
One problem that might arise is you probably have to have a computer readily available at all times. Another possible business is with this company. They sell discount travel packages. They provide you with a website and potential customers call their office and their sales people close the deal. Here is their site.