The items on the left side and the first two badges on the right look like they are a set. They would be most of the insignia from the uniform of a Gunner from 6th Field Regiment, Royal Canadian Artillery during WW2. From top to bottom, 2nd Division blue patches (worn on upper arm), 6 RCA title (shoulder strap), 3 years overseas service chevrons (right cuff), CANADA title (top of sleeve). The badges on right are Royal Canadian Artillery, one with a plastic backing piece to make the beret stand up nicely. For a full insignia set you would need an extra 6RCA and CANADA badge.
Apart from those, the middle two are RCAF sweetheart badges, and the maple leaf badge is a First World War General Service cap badge.
BTW, if you were ever thinking of selling the RCA set I might be interested.