wow, sounds like you have managed allot with this group! I have a couple of small suggestions that have been successful with multiple age and ability levels allowing success for those less experienced and open enough for students to take risks, push it further....
*use balsa wood for wood block prints- it is soft and students can easily use a hammer to gently pound a nut or bolt, etc to create impressions for designs, patterns, etc
*draw on acetate with permanent marker (could be overlaid on mirror for portrait, against the window for landscape...)have students "fill in" for monotype (versus monoprint) -this year we used the leftover acetate over the top of a drawing for a layered mixed media piece
for video clip
*use washable markers on acetate-could use original drawing underneath to guide
*use wet media mylar, thin white plastic sheeting or other cut to size for the plate-use scraps, stickers, etc to develop the original-coat with a release agent-when dry apply ink and print on damp paper
*use same plate material as above-add release agent-when dry use water soluble drawing materials (watercolor crayons, oil pastels) then print on damp paper
*chine collé - embossing - my, my seems I am all inspired by this myself - maybe we need to do some printmaking in class soon :-) !!
let us know what students end up working on~
creatively, Linda in Oregon