My DS loved just about anything from the kitchen at from about 3mos and on (he's 2 1/2 now). I would give him just a couple of things when he was real young (until e could crawl over and explore cabinets himself). Like two yogurt/sour cream tubs with lids. Put something in one, or give them a wooden spoon... now there's some fun! Also, just turning a couple of cups/bowls upside down and putting something beneath them is a lot to explore for a baby! Any weird kitchen gadgets were/are hits: sifters, steamers, shakers (maybe with something that sounds cool inside).
Outside of the kitchen I stuffed a lot of toys or fabrics inside of other things for him to discover. Such as socks in an empty tissue box (while doing laundry), then he could try pulling them out and putting them in. And he loved bells. We went to the craft store and got jingle bells and a hand bell (like the Salvation Army people ring at x-mas time). I strung the jingle bells on some ribbon and he really liked those. He still uses the hand bell to announce "Dinner's ready!"
Mirrors! We set one up one the floor and put DS in the Bumbo in front of it. He loved it. I could do a dish or two, then lean down and play peek-a-boo with a dish towel or cloth or whatever, then he would practice and make all kinds of faces at himself.
And rotation! We tried to remember to pull out different kitchen utensils than we gave him the night before when we were in there preparing a meal. Or stuff something unexpected underneath all of the socks in the tissue box (a favorite toy, a string of jingle bells, something of a different weight and texture than the socks).
Good luck!
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