Soo has been using Solfa with the adult choir to help us with our pitch matching. Without making a fetish of it, I find the hand signs are very helpful in finding the next note. The presentation below is simply photos of the signs. Remember they should start at mid chest level and move up to the final doh.
I use this with year 3. I have laminated the photos and blue tak them to the board in tonesets that manages the song we are working on. Kids have learnt them without much effort.
Click on the presentation below to see all the signs.