Ich werde versuchen, einige davon zu machen. Habe ich etwas vor?

Most of these would work except the first one and the last two imo. I’m sure I’ve seen potato pancakes with tuna and red onion in a restaurant somewhere. If you want to use carrots, you can grate them and add them to the potato batter. Good luck!

The first one is pure heresy and sounds genuinely difficult to taste good… Who eats potatoes with olives and lemon?
The bolognaise sauce doesn’t fit potatoes well IMO but taste is taste. You better eat every last bit of these experiments though, or I won’t forgive you. Food waste is L