The main ones would be nostr:nprofile1qychwumn8ghj7ctwdah8jmt0w4ekwun9v4hzucm0d5hkummnw3exxmrfv4h8gtmpwp5j7a339aex2mrp0yqj6amnwvaz7tm9d4cxzargd93kg6twvahn2tnvde3xjarn9e3k7mf0dehhxarjwfjkccte9amrzqgkwaehxw309a3x2an09ehx7um5wgcjucm0d5hsz9thwden5te0vdkx7atyde6kcmpwd3skuep0qyv8wumn8ghj7cm9d3kxzu3wdehhxarj9emkjmn99uq3qamnwvaz7tm99ehx7uewd3hkctcprfmhxue69uhj6un9d3shjtnwda4k7arpwfhjucm0d5hszxrhwden5te0v96zumn0wd68yam0wf4hxtnrdakj7qguwaehxw309a3ksunfwd68q6tvdshxummnw3erztnrdakj7qgkwaehxw309ash2arg9ehx7um5wgcjucm0d5hsqg9rwyv2fzywqtfgapm8czx24aemfx4a4su344llrz3sfzg7g9kuxvw460ed , Cyber.space , and nostr:nprofile1qythwumn8ghj7ct5d3shxtnwdaehgu3wd3skuep0qyfhwumn8ghj7cnfw3ehgctrdvhxzurs9uq3samnwvaz7tmpwshxummnw3e8wmmjddejucm0d5hszgthwden5te0vdn8yetvv9ujuur4dp3ksmewwahhy6m9wfejuer9wchsz9rhwden5te0v9kxwmeww468smewdahx2tcpz4mhxue69uhkxmr0w4jxuatvdshxcctwvshszxthwden5te0v9jjuur4wfcxcetjv4kxz7fwvdhk6tcpzamhxue69uhkymmnw3ezuct60fsk6mewdejhgtcp94mhxue69uhk2mtsv96xs6trv35kuem0x5hxcmnzd968xtnrdakj7mn0wd68yun9d3shjtmkxyq3samnwvaz7tmrwfjkzarj9ehx7um5wgh8w6twv5hsqgxlgak27jyghawen348zr4x462r60nf855um36ufml3e7mrfqumhqrmldn4 . Of the three, I think Plebian Market is probably the most geared toward having your own "store," but I haven't tested it much.