I got my Liberty last year in July, bought her used with about 56,000 miles (she now has 75,000). Like most trucks, she's my daily driver and my work truck. I work in construction so she gets to romp around in the dirt on a regular basis that's why I had to make some changes/upgrades to make it easier on the both of us.
So far I've only been able to do a couple of mods. She got new rims & tires, 16" x 8" KMC (XD Series) Hoss (in black), with 30" Bridgestone AT's, of course I had to do a lift too, she got the Rusty's 2.5" lift kit (coils & shocks), I upgraded rear shocks to Bilstein 5150's for the better off-road handling and a K&N drop-in filter.
My future plans include (in no particular order):