Do you like gambits?
I like experimenting with gambits. It really allows you to build center pawns. I hate when my opponent does not except the offering and just defends the piece meant to take the gambit.
The thing is learning about the gambit before using it. I like the Koltanowsky, the Krause variation against 1.d4 d5 2.Nf3 and the Steinitz countergambit against the Mason attack. Anyway in all these gambits you get the pawn back or a better postion of your pieces.