Stickers also add weight reduction.
LOL
Its why you can eat all the donuts you want w/o gaining weight, the hole in the middle is the antidote for the outside....like having some anti-matter with your matter.
The free or almost free mods as mentioned are the best way to go if broke.
Also - Make sure you know if you need to be saving for maintenance items....such as if you are due at 105k miles for a new timing belt, water pump, etc. Does it need plugs or wires, filters, repacking of wheel bearings, front drive shaft greasing, etc?
Its not as much fun to have lots of lights on a rig that can't move, etc.
After you are sure you have the $ to keep it running, etc...
..Think about what you want it to be able to do, that it can't now.
Your mods should have a path in your head...that all leads to a concept you want your X to be one day.
For example, if you think you might want larger tires than 32's one day, a body lift is something you can do yourself for ~ $100 or so....and that makes room for larger tires.
If you are going to off road, you'll want sliders...and, they work best if you get them to fit WITH the BL, as you then get slider that can reach up far enough to still protect you after the BL - IE: You'd get the BL first, so all the stuff you get will then be able to work with the BL, and avoid gaps, etc.,,,so sliders and bumper and larger tires = do BL before the other stuff.
If you do the BL first, you can also get the larger tires w/o waiting, etc...as that made tire room, and so forth.
A PML = 1.5" suspension lift, also less than $100, all you need are new shackles for the butt, and use the built-in adjusters to raise the front to match.
If planning on off roading, you might also want a CB for trail communication with your buddies. And recovery gear, etc.
And so forth.
Think about what kind of rig would make you happy, and then PLAN a path to get there. That avoids the typical rush to get gew gaws, and then find you want a different XYZ because the old XYZ looks dumb after the other changes, or you end up buying a different version of something twice instead of once, etc...
And, you don't blow your budget on a light bar, and later find you'd have rather gotten new shocks, etc.