AliExpress unbag joy - High voltage, fire sprinkler, thermal switches, solar stuff

Another bulging sack of technical goodies from AliExpress for us to explore.These videos are not sponsored by AliExpress. I buy all these items myself.Here are some links to the items. Some of these are affiliate links, but that will not affect the price you pay.Keep in mind that these products may not meet your country's standards.Some listings may not work for some countries and some may just be sold out or disappear.When paying on AliExpress, let the transaction complete before leaving the purchase page as otherwise it may not go through.The very nifty high voltage tester:-https://www.aliexpress.com/item/1005006761965493.htmlShop around for the best price. It may appear as a bundle deal item.If you buy one of these - open it and check that the potentiometer mounting pins aren't poking into the lithium cell! They may need trimmed.The fire sprinkler head:-https://s.click.aliexpress.com/e/_c4rYqQpJThe liquid colour denotes the threshold temperature where the glass vial bursts. The most common is red.The 100mA solar panel:-https://s.click.aliexpress.com/e/_c4tzoKFxThe 140mA solar panel:-https://s.click.aliexpress.com/e/_c4lElK9JShop around for this one - the original item showed up as not available.My preferred style of PCB laminate backed solar panel:-https://s.click.aliexpress.com/e/_c2JC0dbfThese are available in various voltages and currents.Toilet cistern slow release "blue-loo" block holder:-https://s.click.aliexpress.com/e/_c36MnDnnSelection pack of tactile switches for things like car remotes:-https://s.click.aliexpress.com/e/_c36CCxyZTransistor-style thermal switches:-https://s.click.aliexpress.com/e/_c4WfWtG1Available in a wide range of temperatures, and as normally open or closed.Solar powered thermometer and humidity meter:-https://s.click.aliexpress.com/e/_c3bkybp3Selection pack of red, green,blue,black and white markers:-https://s.click.aliexpress.com/e/_c35Wn6b3Extra long tip pens with refill ink option:-https://s.click.aliexpress.com/e/_c3MJeAUlIf you enjoy my videos, supporting the channel on Patreon helps keep it independent of YouTube's quirks, avoids intrusive mid-video adverts, gives early access, bonus footage and regular quiet Patreon live streams.https://www.patreon.com/bigcliveAlternatively, for a single coffee contribution you can use PayPal:-https://www.paypal.com/paypalme/bigclive#ElectronicsCreators...https://www.youtube.com/watch?v=_3nctnxMpWQ