What are you favorite muesli add-ins?

This isn't really a "mix-in" but...In the summer time I like to sprinkle sugar on my peaches and soak them in milk. After eating the peaches, I save the sweet peach flavored milk to have with my muesli. A delicious summertime treat!

Dates and walnuts

If i'm being naughty: greek yogurt, lemon curd, blackberries, honey and pistachios (my ultimate combination). If I'm being good: a touch of maple/honey, pepitas, almonds, dried apricots, dried cherries, toasted coconut, chia seeds, sesame seeds, orange zest, warm spices, etc. I just used what I have on hand and then pour over unsweetened almond milk.

Dried cherries + Cocoa powder
Blueberries + Mashed banana
Peaches + Yogurt + Cinnamon

any fresh fruit to add a touch of brightness to all the seeds & grains. especially good are stone fruit (peach, plum et al) and berries.

I also stir in about a tablespoon of lemon juice with plain yogurt and milk and raw sugar. I don't know if these count as "add in's", but that's my favorite breakfast and its staying power takes me through early afternoon.

Sliced almonds, wheat germ, dried fruit, blueberries, grated Apple.

pumpkin seeds and pecans!