When dear husband and I were married, he had a mini-cuisinart processor, and we received a large one as a wedding present. With these two items, plus we have a hand blender and a normal blender, I have found no need to purchase anything else. I would steam large batches of fruits and vegetables, puree them, then put them into individual serving sizes and store them in the freezer.
We did not travel until our daughter was able to eat things like cheerios, crackers, pasta (not spaghetti, but macaroni and the like), break down small bits of chicken, and smush fruits like bananas and raspberries, etc. in her mouth. So any restaurant we would likely take our child to would certainly have something that she could eat--whether it was ordered specifically for her or off of our plates. I have heard that having one of the portable "baby processors" can be quite convenient when traveling with a baby who still needs everything pureed. However, you may be surprised at just how easy it is to find things that are compatible.