Yes, there's several ways to do it. There's kits you can buy, or you can make your own. I just di mine two days ago simply using longer three M8 & one M10 bolts, a few washers/fender washers and four coupling nuts that are two inches long as spacers. Pieces of pipe would work just fine as spacers, cut to whatever length you want.
do a "seat riser" search on this site and you will find lots of info.
I wanted to raise the drivers seat in my TJ, but all the spacer kits cost from $25 to $50. Being a generally cheap guy with a "why-buy-when-I-can-make-it" attitude, I pulled a couple of bolts and went to the hardware store. I bought some thick black square washers and some longer bolts the same...
I love it and I can now see the important part of the speedometer without leaning forward as well. The sun visors will work down to the horizon if needed as well now.
Wanting to raise the seats higher is a common issue for 2003 and newer TJs, that was the model year Jeep in its wisdom lowered the seats to "better align" them with the airbags. It sure made seeing out harder, spacers pucks like mentioned above are a good fix!