​      For the throttle/mixture i purchased 3 knobs on e-bay like in the picture below (you can purchase them here about $4.3 for 3 pcs incl shipping). On the inner side I cut a piece from a pencil and glued to the throttle/mixture knobs. On the mixture knob i also glued a small camera cap that i had and then drew a circle with the inner circle of a CD on an aluminium tape, cut it and taped it on the front. For Throttle and Mixture holder, i used the plastic handle of an old screwdriver and since i didn't have a dremel, i used my rechargeable drill as in the picture below to make those forms. you may find plastic forms that look similar so you don't have to work that much to get that shape.