LoopPlace.lua

local function getItem()
    if not (turtle.getItemCount() > 0) then
        for i = 1, 16 do
            if turtle.getItemCount(i) > 0 then
                turtle.select(i)
                turtle.transferTo(1)
                turtle.select(1)
                return true
            end
        end
    end

    return false
end

while (true) do
    turtle.place()

    if not (turtle.getItemCount() > 0) then
        local found = getItem()

        if not found then
           break
        end
    end
end