@Edent een kadobon, maar let op geldigheidsduur: https://blog.gifty.nl/cadeaubonnen-wat-je-moet-weten-over-geldigheid-en-vervaldatum/

@wiert I don't really understand what you're trying to say, sorry. It is up to a recipient if they don't want to spend it in time.

@Edent Amazon voucher might have the widest appeal, unless you prefer not to support that company

@ogeer @Edent Ah, guess “National” was a clue and their Euro support is limited to serving (Northen) Ireland? I didn’t check that, sorry.

@Edent sorry, thought you were Dutch. People are bad at remembering expiry dates, especially when they are years in the future. Luckily, there are still a few Dutch gift cards that don't expire.

@Edent Wouldn't it skew the demographics of people who volunteer to test if you pick one kind of voucher, instead of offering a selection?

@richardloxley @Edent I avoid buying from Amazon. Recently got done gift vouchers and as it has been so long since I last purchased through them I had to update the card and in doing so it ignored the gift card balance. So annoyed as by the time I noticed it was too late to change it.

@Edent the Office for National Statistics, when they do surveys, give you one of these vouchers -- https://www.pluxee.uk/products/evouchers/ -- which the recipient can then choose from a bunch of different stores and restaurants and such. I turned mine into an M&S one one time and had a lovely dinner
No idea whether you have to buy 10,000 at a time or something, mind, or whether it'd work for you, but I found it useful, and the ONS presumably (hopefully?) did at least some due diligence on them being OK

UK's Leading Gift Vouchers for Employees | Pluxee

Boost your reward and recognition strategy with cost-effective and inclusive eVouchers: Employee rewards that give your people access to an unparalleled choice of retailers.

(www.pluxee.uk)

@Edent if the participant is in the UK, I'd say Argos. They sell stuff which most people will have to buy at some point at prices which aren't stupidly priced, and have collection points almost everywhere

@Edent I voted books, but https://uk.bookshop.org/gift_cards rather than Kobo perhaps?