"The amazing response has built Marcus' confidence up again - he can't wait," she said yesterday.
Louise Barnicoat from Central City Pharmacy said he would more than welcome him outside her store and she was sad that Marcus had had such a hard time finding somewhere.
"I felt sorry that they had had such negative reactions," Ms Barnicoat said.
Fiona Barclay from Sunny's Variety store was also disappointed by the initial response.
"I just couldn't believe it - where's the Christmas spirit? He's welcome here any time of the year."
Fellow musician Ann Berntsen wanted Marcus to know if he needed a back-up she would love to play her piano-accordion with him, and he could keep any money they collected.
"Some people aren't appreciative of the fact that he's learning," she said.
Roger Kiriona, whose son Les owns Mint cafe, also offered Marcus a spot outside the cafe.
"I feel very sorry for that young fella - I've seen him play before, and he's very good."
And Joshua D'ath from Driftwood Board Co would like him to play outside his skate shop.
Doreen Hardy, chair of retailers' group Whanganui Mainstreet, offered the young musician the Majestic Square stage, saying: "Go for it, mate."
And another offer came from Derek McInnes, from Aotearoa Credit Union, who said if Marcus played outside their property he'd like to buy him lunch.
Also keen to give the young lad a chance was Lesley Stead from Paige's Bookshop who said her store front was available.
"We'd love it if Marcus came and played outside our store. We'd encourage him - and we'd give him Christmas cake. We'd be most appreciative, and so would our customers."
Meanwhile, Tina Wright from the Masonic Court rest home offered him $15 to play for the residents.
But yesterday the offer of a hot chocolate and a slice of cake took Marcus to the Red Eye Cafe in Guyton St, where owner Doug Brett said: "I like music and he sounds great.
"It's good to see him out and about and doing something rather than sitting round the house playing XBox or whatever.
"He can play every year if he likes."
Mrs Nyssen said she wanted to sincerely thank all those who had made offers.
"The Christmas spirit still lives - it has made for a really happy day for us."