Arundel 66 f1v red and white roses around an M, w/ gothic cursive - ideal for a lady of the Rose
Royal 12A XVI f3 Crowned arms of England with roses around Q, gothic cursive - substitute other armory for the English arms.
This one is not as finely drawn or painted as some examples, but to me, that makes it more accessible - something that is perfect just sets the bar for my illumination way too high. The strawberries suggest a duchy, if you want, or you can change them to other flowers.
The real challenge though would be making it to original size - about A5, or half a normal sheet of paper.