@ Jan, hehe :D
They're my little critters www.flowerbeetles.com ;)
Just found a couple of sweet potatoes under the sink and have been researching online. One is now in a pot of water on the kitchen windowsill, will try the other in compost and see how they compare. Was a bit confused about taking off the slips, but apparently you twist off the bits that are growing then put them in water to grow roots to about an inch before planting in pots or soil. Apparently they prefer acid soil, which I don't have, so it may be pots for me if they succeed.