# Glowing Drinks for a Party

**URL:** <https://discourse.southlondonmakerspace.org/t/glowing-drinks-for-a-party/52223>\
**Category:** Projects\
**Tags:** electronics, 3dprinting\
**Created:** [13 September 2026 12:41 UTC](https://discourse.southlondonmakerspace.org/t/glowing-drinks-for-a-party/52223 "2026-09-13T12:41:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ylatef](https://discourse.southlondonmakerspace.org/user_avatar/discourse.southlondonmakerspace.org/ylatef/32/29788_2.png) [@ylatef](https://discourse.southlondonmakerspace.org/u/ylatef)\
**Post date:** [13 September 2026 12:41 UTC](https://discourse.southlondonmakerspace.org/t/glowing-drinks-for-a-party/52223/1 "2026-09-13T12:41:45Z")

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Hey folks, just a general request for ideas here, as I’ve got a vague idea and am not 100% sure how to execute. Basically, I’ve got a few ideas for UV-reactive cocktails I’d like to make for an upcoming costume party, and I’d like to have UV lights embedded into the serving bottle and/or glasses, if at all possible.

Anyone got an idea of what the best approach would be? What strength of led light would I need, for example? For the cups, I was thinking of getting cheapish plastic ones, pairing them up, with an led and a battery inside the bottom cup, switch exposed, second cup on top of that for the drink, or something along those lines.

For the bottle, I could probably just buy one of those gimmicky “self cleaning” UV water bottles, and it’d probably fit the vibe… but I might print some kind of frame I could hide some LEDs and a switch in, instead.

All thoughts welcome!

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**Author:** ![Binney](https://discourse.southlondonmakerspace.org/user_avatar/discourse.southlondonmakerspace.org/binney/32/23830_2.png) [@Binney](https://discourse.southlondonmakerspace.org/u/Binney)\
**Post date:** [18 September 2026 10:13 UTC](https://discourse.southlondonmakerspace.org/t/glowing-drinks-for-a-party/52223/2 "2026-09-18T10:13:19Z")

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Love this idea!!

Not sure if you can get UV ones, but have you thought about wireless LEDs? Stick them near an induction coil and they power inductively. Could be a simpler way of getting them into your cup, no switch required.

This kinda thing: [Large Inductive Wireless LEDs - 10 Pack - The Pi Hut](https://thepihut.com/products/large-inductive-wireless-leds-10-pack)

Then you could conceal the coil in a “coaster” and the light comes on =\> drink changes colour when you place the cup nearby.  
(Bonus: they only work when facing the right direction - but assuming the cup has liquid in it you can line them up!)

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**Author:** ![ylatef](https://discourse.southlondonmakerspace.org/user_avatar/discourse.southlondonmakerspace.org/ylatef/32/29788_2.png) [@ylatef](https://discourse.southlondonmakerspace.org/u/ylatef)\
**Post date:** [1 October 2026 09:32 UTC](https://discourse.southlondonmakerspace.org/t/glowing-drinks-for-a-party/52223/3 "2026-10-01T09:32:07Z")

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I missed the boat on this in the end (also missed the party for reasons =T) but will bear this in mind for when I inevitably try again!