Budget? Does it function well for you? Painting the cabinets and changing the counter tops and lighting would be a good start. I'd probably want to remove the floor tile and replace it with wood. If the functionality is subpar, then save your $$$ for a total gut job.

I would remove island and desk and expand cabinetry and countertop where desk is located. Remove molding from top of cabinets, paint light color, maybe paint top neutral and bottom a color. Change hardware throughout. Get rid of columns on left. Update or paint appliances. New fixture on sink if needed and new countertops (budget friendly).

I would upgrade the hardware, remove the island (you have plenty of counter space and storage and the island takes up too much space), change the counter tops and backsplash, and change out the lighting fixture over the sink as well as have recessed lighting installed in place of the overhead fixture. Your floor grout can be re-colored with a product like grout renew to lessen the contrast between the grout and tile color. It also reseals the grout to help avoid staining. The desk area would make a nice coffee bar. If you change counter tops, extend the overhang seating so it's a bit deeper and shorten the end overhang to the standard 1.5 inches. Then find yourself some pretty barstools that fit nicely under the overhang.

No island , if you want to you can have the cabinets painted but it is expensive. If you love how the space functions it is worth it . If you want to change the function I would not bother trying to save the cabinets . The first thing you need is to get new lighting , pot lights are good in your ceiling height use all LEDs in 4000K . A counter depth fridge for sure . Where does the door go to? If keeping the cabinets then a new stailess sink to go into the new counters either way no desk in the space .

"on a budget" is no guidance at all, as it means totally different things ($1200? 25000?) to different folks. I'd say a new counter and backsplash -- probably a couple thousand if you don't change anything else -- would give you a radically new feeling, if that's what you're after. new lighting would go a long way too -- several hundred for wiring and fixtures. after that, it jumps in price -- stainless appliances look nice but may not change function, painting cabinets adds up way faster than you'd think, and starting all over probably means Ikea cabinets (recommended by many here), still not cheap with this much space, but upgrading a lot of functions...