You can buy one of the bitaxes at https://bitcoinbrabant.com/product/bitaxe-bitcoin-amsterdam-heater/ if you're at the conference, you can take it home after the conference or choose to ship it after they have done their job for two days.

The last prototype #BTClock with frontlight is for sale at https://btclock.store/product/btclock-rev-b-prototype/

I expect to have the final version in stock the week of the conference.