Tenny.. you can get lie down ones that are plastic from BigW or Kmart. They are great! You can also get ones that are made from terry towelling.. they are terrible!! Bubs just slides of them! But the lay down one i found wonderful for Jesse. You dont need to hold them, they just lay in it. Ill post a pic of Jesse in his so you can see what it looks like.
Here: https://www.bellybelly.com.au/forums...php?photo=9604

Tasia.. id say the clear stuff is saliva? Keira would bring up the same too. Yeh i think as long as its not hurting them, theyre not upset alot (as in have trouble settling) and is not a full on amount (theyre still putting on weight fine) then it just comes up with wind because theyre bellies arent mature enough yet to keep it down. That was Jesse's case. But again, if youre ever concerned, get a second opinion and see your GP.