The thing about planting a 10g is finding plants that fit. You don't want to shove a bunch of plants in there that will out grow it.
The light can also be an issue. My 10g hood has 2 screw in bulbs. I replaced the incandescent bulbs with 2 10w fluorescent bulbs....which gives me 2 watts per gallon.
Plants that have worked for me are:
Wisteria (grows too fast)
Rotala rotundifolia
Dwarf Sag (foreground)
Corkscrew Vals
crypts (petchii, wendtii, lutea)
crypt parva is the smallest crypt...but I haven't been able to find any
Rosette swords
Java fern
Anubias (nana and petite nana are the smallest)
Bacopa caroliniana (growing slow right now)
Echinodorus tennellus
Most swords get too big for a 10g, except for rosette swords (Echinodorus parviflorus 'Tropica'). They are very cute and dont get any taller than 6 inches and no wider than 8 inches. I have 2 in my 10g.
Here is a picture of my 10g. Its not that appealing at the moment. You can see one of my swords on the left.