Hi there

We've been invited to participate in a wedding: I am a bridesmaid and fh is a groomsman. The couple has been super amazing to their bridal party, we were only asked for 2 things: to attend the rehearsal dinner, and for me to find a long pink or purple bridesmaids dress. I didn't even have to buy anything because I already had such a dress dying to be worn. Fh didn't have to pay for his suit rental, as the couple covered that. We've had absolutely no financial obligations towards the wedding so far, as the couple didn't want any showers or bachelorette party.
I'm wondering, since we didn't spend any money on stuff most bms and gms pay for, should we give a bigger gift? I'd like to, but I'm not sure how much of a bigger gift is appropriate.
What do you ladies think?