But never fear! If I can't sign your book in person I can still sign it for you remotely!
If/when you order a copy of my new book of funny poems 'A Hatful of Dragons' just send me a note (through my website or via social media) with your mailing address and whom the book is for, and I will mail you a bookplate label with a personalized message. You simply peel the label and stick it on the inside cover page, and - ta-daa - you have a signed book!
Uhm yes I am aware that the cost of a label + mailing will probably exceed my per-book royalty... so I would be ever grateful if you can return the favor, assuming you've enjoyed the book, by spreading some word-of-mouth buzz about the book (tell some friends, give it as gifts, etc) and leaving a positive review somewhere.