I accepted an invitation for a friend's bridal shower this weekend, and there was a poem attached that in lieu of traditional gifts they'd love if we could contribute to their honeymoon (that's not the poem for verbatim but it was along those lines). I'm aware of the unpopular opinion of "honeyfunds" here, but I am at a loss as to what to contribute to this. I feel uncomfortable knowing that they will know the exact amount I contributed, as opposed to a tangible gift where it's a little more discreet. Would it be rude to contribute $30? Is it even more rude to just bring a traditional gift anyway? I'm tight on money right now and can't break the bank, I also don't know anybody else going to the shower to split anything with. I already RSVP'd yes and will be attending regardless of "honeyfund" theme, but I'm looking for advice on etiquette for gifting (even though I'm aware the etiquette on their end was to not ask for honeymoon $$ to begin with). Thank you!!
ETA: spelling