You can use "Mix First Letters" for free here

Try Mix First Letters with different words or names. Curious about even more original features? Then go to the awesome NameRobot Naming Toolbox, where there is Mix First Letters with all the trimmings. There are even more name generators and clever tools for word search, naming, and inspiration.

This tool creates abbreviations from the first two letters of up to four keywords you have selected. This can produce melodious abbreviations that can be spoken like a single word, e.g. SEGA (Service Games), Haribo (Hans Riegel Bonn) or Ricola (Richterich & Co. Laufen).

Here you can also see that there are no limits to the words you can add to the mix: First and last names, place of origin, product, industry...