When we give Jesus what we have, he increases it to show people that there is enough for everyone.
John 6:9 “There is a boy here who has five barley loaves and two fish, but what are they for so many?” … 11 Jesus then took the loaves, and when he had given thanks, he distributed them to those who were seated. … 12 “Gather up the leftover fragments, that nothing may be lost.” … 13 So they gathered them up and filled twelve baskets with fragments from the five barley loaves left by those who had eaten.”
The miracle becomes visible when the loaves are collected. In thanks we become aware of what God is doing in our lives.