What you need is for you to decide.
Flloormats... check amazon ebay aliexpress for options before paying excessively for a few of those name brands
Reverse LED bulbs..... went with a little upgrade since I still turn around to look and use my mirrors.
Armrest cover. Have both the padded and the non padded in pseudo leather. I prefer the padded. Again, both are available on amazon. The padded one also has optional cell phone holder on both sides, that can store other small equivalents.
Glove box divider.... not sure when Toyota forgot how to make a glovebox. Divider gives hint of organizing.
Center armrest storage tray.... always used them in numerous cars and recommend.
Center armrest storage divider... don't care for it.
Below HVAC controls center console divider.... its still there but still not sure if I'm going to keep it.
Behind radio screen dash storage tray.... didn't peel/stick it yet but pretty sure going to keep this one. Tend to toss stuff up there and the tray helps. Good for the garmin/tomtom gps
Key fob cover... worry less now when dropping that expensive fob remote. Etsy and Amazon have plenty of choices.
Cupholder and various liners. A full set from Amazon stuffed everywhere. You can get a sheet of rubber and cut your own.
Cargo mat.... bought a generic that covers the rear cargo and rear seats and is velcro'd in just like OE but 1/3 the cost
Rear hatch LED bulbs. Didn't care for the overly bright ones that many members here install. Just got the center hatch Lexus one and plan on installing it soon. Hope it fits.
Splash/mud flaps/guards.... OE is good enough. RokBlokz Trd are some others.
Wheel locks... around here, methheads tend to raid employee parking lots. Gorilla, OE or Mcgard... are some choices.
Catshield... your catalytic converters might need protection just like your wheels.
Speakers/amp/subwoofer.... I find both the 6-speaker and JBL lacking. Still building a system and will also consider some sound proofing too.
Hitch... have nothing to tow behind a Rav4 but could use a carry rack, grill carrier, bicycle carrier.... so might consider one. Considering the ecohitch hiddern or Oris detachable.
Window tint.... if you're in a hot area, look at the premium or higher end ceramic, nano ceramic, or heatblock tints. Consider a windshield protection film, clearplex xpel exoshield, and use the same for the sun/moon roofs if equipped.
Wolo, Hella, PIAA horns if you enjoy responding to or creating road rage. We all really need train horns and anger management.
Trd has some stuff, and some of it might actually fit
TRD
www.trdparts.jp
Window visors.... since I'm in a hot climate and always leave a window or 2 1/4" open, and need flash t-storm water protection. Don't forget a windshield sun screen too.
Also recently added a FICs cell phone holder that goes around the radio screen and is better than a vent mount.
Toyota rav4 2019-2024 is another spot for some unneeded but maybe wanted extras. Don't forget ebayamazonaliexpress for comparative shopping/pricing